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Explain with examples:
(i). Atomic number
The number of in the nucleus of an atom is known as its atomic number.
Example: has \(6\) , hence atomic number \(= 6\)
(ii). Mass number
A mass number or atomic mass of an atom is equal to the sum of the number of present in the nucleus.
Example:
Mass number of oxygen \(= 12\)
\(=\) Mass number \(=\) \(6 + 6 = 12\)
(iii). Isotopes
The elements that have the but are known as isotopes.
Example:
(iv). Isobars. Give any two uses of isotopes.
Isobars are atoms with different atomic numbers but the same mass number. In other words, the nucleon count is the same, but the number of protons is different.
Example:
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