Physics
The atoms of the same element, having the same atomic number Z but different mass number A are called :
- Isotopes
- Isobars
- Isotones
- None of the above
Radioactivity
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Answer
Isotopes
Reason — Isotopes are atoms of the same element that have the same atomic number (Z) but different mass numbers (A). They have the same number of protons but different numbers of neutrons.
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Related Questions
If Z is the atomic number and A is the mass number of an atom, then which of the following relations is incorrect ?
- Number of electrons = Z
- Number of protons = A - Z
- Number of neutrons = A - Z
- Number of neutrons + number of protons = A
A certain nucleus P has a mass number 15 and atomic number 7. The number of neutrons is :
- 7
- 15
- 8
- none of the above
Out of the following, which element has the largest number of isotopes ?
- Hydrogen
- Carbon
- Chlorine
- Tin
3919K and 4020Ca are :
- Isotopes
- Isobars
- Radioactive substances
- Isotones