Atoms of the same chemical element do not always have the same mass because, although the number of protons in the nucleus is the same for all atoms of the same element, the number of neutrons is not. Most elements as they occur naturally on earth are mixtures of several isotopes.
- 1 Do atoms have the same number of neutrons?
- 2 Do atoms always have the same number of protons and neutrons?
- 3 Why do atoms have different number of neutrons?
- 4 Does every atom of the same element have the same atomic number?
- 5 Do all elements have neutrons?
- 6 How are atoms of the same element the same How are atoms of the same element different?
- 7 What is the same for all atoms of the same element?
- 8 Why do all atoms of an element have the same atomic number although they have different mass number?
- 9 Do all atoms of an element have the same mass?
- 10 Are all atoms the same element?
- 11 Why do all atoms have the same number of protons?
- 12 What are different atoms of the same element but containing different numbers of neutrons called?
- 13 Do all atoms have same number of protons and electrons?
- 14 How many neutrons are in an atom?
- 15 Why do larger atoms have more neutrons?
- 16 How are atoms of different elements different?
- 17 Why do atoms of the same element have different masses?
- 18 Why are protons and electrons always the same?
- 19 Are all protons the same?
- 20 Can atoms of the same element have different number of protons?
- 21 What do all atoms of the same element have in common quizlet?
- 22 What do you call the atoms of the same element but different in structure?
- 23 What are atoms of same elements?
- 24 Which of the following is an atom of same element which have the same atomic number but has different mass number?
- 25 How do you find neutrons in an atom?
- 26 How do you find neutrons in an element?
- 27 Why stable have more neutrons than protons?
- 28 What is it called when an atom has more neutrons than protons?
- 29 Which atoms have the same mass number?
- 30 How do you know how many neutrons an element has?
- 31 What if an atom has more neutrons?
- 32 Are all electrons exactly the same?
- 33 Do protons and electrons have the same mass?
- 34 Do all protons have the same mass?
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35
Can an atom have unequal number of electrons and protons?
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35.1
Related Posts
- 35.1.1 Do all oxygen atoms have the same properties?
- 35.1.2 Do all sodium atoms have 11 protons?
- 35.1.3 Do all atoms have different properties?
- 35.1.4 Do all oxygen atoms have the same mass?
- 35.1.5 Do all carbon atoms have an atomic number of 6?
- 35.1.6 Do carbon 12 and carbon 13 have the same atomic number?
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35.1
Related Posts
Do atoms have the same number of neutrons?
Atoms of a particular element must have the same number of protons but can have different numbers of neutrons. When an element has different variants that, while all having the same number of protons, have differing numbers of neutrons, these variants are called isotopes.
Do atoms always have the same number of protons and neutrons?
Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well. Adding a proton to an atom makes a new element, while adding a neutron makes an isotope, or heavier version, of that atom.
Why do atoms have different number of neutrons?
Atoms need a certain ratio of neutrons to protons to have a stable nucleus. Having too many or too few neutrons relative to protons results in an unstable, or radioactive, nucleus that will sooner or later break down to a more stable form.
Does every atom of the same element have the same atomic number?
All atoms of a chemical element have the same atomic number (number of protons in the nucleus) but may have different mass numbers (from having different numbers of neutrons in the nucleus). Atoms of an element with the same mass number make up an isotope of the element.
Do all elements have neutrons?
Neutrons are found in all atoms except for most atoms of hydrogen. All the atoms of a given element have the same number of protons and electrons, but they may vary in their numbers of neutrons. Atoms of the same element that differ in their numbers of neutrons are called isotopes.
How are atoms of the same element the same How are atoms of the same element different?
ISOTOPES AND ATOMIC MASSES
For many of the chemical elements there are several known isotopes. Isotopes are atoms with different atomic masses which have the same atomic number. The atoms of different isotopes are atoms of the same chemical element; they differ in the number of neutrons in the nucleus.
What is the same for all atoms of the same element?
Atoms of the same element have the same atomic number so the number of protons (and electrons) are same. But they have same or different mass numbers (like that for isotopes). Different mass number will have different number of neutrons. Was this answer helpful?
Why do all atoms of an element have the same atomic number although they have different mass number?
Isotopes of any given element all contain the same number of protons, so they have the same atomic number (for example, the atomic number of helium is always 2). Isotopes of a given element contain different numbers of neutrons, therefore, different isotopes have different mass numbers.
Do all atoms of an element have the same mass?
The atomic mass depends on the number of protons, and neutrons, massive nuclear particles. For a given element, the number of postively charged, massive nuclear particles, the number of protons, is fixed. Why? Because the number of protons determines Z , the atomic number, which determines the identity of the atom.
Are all atoms the same element?
The nucleus of an atom contains neutrons and protons bonded tightly together. The same chemical element can have a different number of neutrons and still be the same element. We refer to the atoms of the same element with different numbers of neutrons as “isotopes”.
Why do all atoms have the same number of protons?
Name | Lithium |
---|---|
Protons | 3 |
Neutrons | 4 |
Electrons | 3 |
Atomic Number (Z) | 3 |
What are different atoms of the same element but containing different numbers of neutrons called?
Elements have families as well, known as isotopes. Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons. The number of protons in a nucleus determines the element’s atomic number on the Periodic Table.
Do all atoms have same number of protons and electrons?
Atoms do not always contain the same number of electrons and protons, although this state is common. When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons).
How many neutrons are in an atom?
Elementary Particle | Charge | Mass |
---|---|---|
Neutron | 0 | 1 |
Electron | −1 | ~0 |
Why do larger atoms have more neutrons?
As the nuclei get larger, the neutron well gets deeper as compared to the proton well and you get more neutrons than protons.
How are atoms of different elements different?
Normally, the number of electrons is equal to the number of protons, which makes atoms electrically neutral. The number of protons in an atom is the defining feature of an atom. It’s what makes one element different from another. The number of protons in an atom is called its atomic number.
Why do atoms of the same element have different masses?
Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.
Why are protons and electrons always the same?
Actually the proton and electron count of an atom are equal only when the atom is neutral in charge. The three atomic particles of an atom are the protons, which carry a positive charge, the electrons which carry a negative charge and the neutrons which have no charge.
Are all protons the same?
All protons are identical. For example, hydrogen protons are exactly the same as protons of helium and all other elements, or pure substances. However, atoms of different elements have different numbers of protons.
Can atoms of the same element have different number of protons?
If two atoms have different numbers of protons, they are different elements. However, if two atoms have the same number of protons, but different numbers of neutrons we refer to them as isotopes. Two terms we use to identify nuclides (isotopes) are atomic number and mass number.
What do all atoms of the same element have in common quizlet?
Atoms of the same element all have the same number of protons but they can have different numbers of neutrons. This is why different atoms of the same element can have different atomic masses.
What do you call the atoms of the same element but different in structure?
The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. Different isotopes of the same element have different masses.
What are atoms of same elements?
Atoms of the same element have the same atomic number so the number of protons (and electrons) are same. But they have same or different mass numbers (like that for isotopes). Different mass number will have different number of neutrons.
Which of the following is an atom of same element which have the same atomic number but has different mass number?
These different kinds of the same element are called isotopes. Isotopes are atoms that have the same atomic number (and are therefore of the same element) but different mass numbers. The composition of atoms of the naturally occurring isotopes of carbon are shown in Table 4.2.
How do you find neutrons in an atom?
For all atoms with no charge, the number of electrons is equal to the number of protons. The mass number, 40, is the sum of the protons and the neutrons. To find the number of neutrons, subtract the number of protons from the mass number. number of neutrons=40−19=21.
How do you find neutrons in an element?
Finding the Number of Neutrons
The number of neutrons in an atom can be calculated by subtracting the atomic number from the atomic mass. Both of these numbers can be found on the periodic table. The atomic number is listed above the symbol of the element whereas the mass number is placed below.
Why stable have more neutrons than protons?
Heavy nuclei, which are stable contain more neutrons than protons in their nuclei. This is because electrostatic force between protons is repulsive, which may reduce stability.
What is it called when an atom has more neutrons than protons?
An atom with more neutrons than protons is called isotope.
Which atoms have the same mass number?
Isobars, are the atoms having the same mass number but different atomic number. For example, the atomic number of carbon and nitrogen is 6 and 7 respectively. Carbon-14 an isotope of carbon has a mass number of 14 which is same as that of nitrogen and hence carbon-14 and nitrogen are isobars.
How do you know how many neutrons an element has?
Since the vast majority of an atom’s mass is found its protons and neutrons, subtracting the number of protons (i.e. the atomic number) from the atomic mass will give you the calculated number of neutrons in the atom. In our example, this is: 14 (atomic mass) – 6 (number of protons) = 8 (number of neutrons).
What if an atom has more neutrons?
So, if an atom has equal numbers of electrons and protons, the charges cancel each other out and the atom has a neutral charge. You could add a thousand neutrons into the mix and the charge would not change. However, if you add a thousand neutrons, you will be creating one super-radioactive atom.
Are all electrons exactly the same?
Every electron in the universe has exactly the same mass, exactly the same charge, and if you think about it, there’s no reason why they’d have to be. In 1940, physicist John Wheeler came up with a novel new theory that might explain why all electrons are identical.
Do protons and electrons have the same mass?
proton, stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg, which is 1,836 times the mass of an electron.
Do all protons have the same mass?
Protons and neutrons have approximately the same mass, but they are both much more massive than electrons (approximately 2,000 times as massive as an electron).
Can an atom have unequal number of electrons and protons?
If an atom has unequal numbers of protons and electrons, it will be charged and is called an ion. The reaction below shows how ions form.