Question

Which of the following pairs represents a pair of isotopes?
(A) 8p + 8n ; 8p + 9n
(B) 9p + 9n ; 8p + 9n
(C) 18p + 22n ;16p + 24n
(D) 9p + 9n ; 8p + 10n

Answer 1

Answer:

a will be the answer.....

Answer 2

Dear Student,

● Answer -

(A) 8p + 8n ; 8p + 9n

◆ Explanation -

Both elements in option (A) have same no of protons but different no of neutrons. Hence, they are isotopes.

# Extra information -

• Variants of element with same atomic number but different atomic mass number are called as isotopes.
• Isotopes of chlorine are used for research purposes.
• Isotopes of iodine are used for radiotherapy in treatment of hyperthyroidism, cancer, etc.
• Uranium, Radium, Polonium isotopes are used in atomic reactors.
• Cobalt isotopes are used for irradiation of food products.

Thanks dear. Hope this helps you...