An isotone of 32 Ge 76 is i. 32 Ge 77 ii. 33 As 77 iii. 34 Se 77 iv. 34 Se 78

Question

An isotone of 32 Ge 76 is i. 32 Ge 77 ii. 33 As 77 iii. 34 Se 77 iv. 34 Se 78 (A) Only (i) and (ii) (B) Only (ii) and (iii) (C) Only (ii) and (iv) (D) (ii), (iii), and (iv)

Tardigrade Admin · Accepted Answer

Isotones have same number of neutrons 32 Ge 76 n=76-32=44 1. 32 Ge 77 n=77-32=45 2. 33 As 77 n=77-33=44 3. 34 Se 77 n=77-34=43 4. 34 Se 78 n=78-34=44 So answer is (c)

Q. An isotone of $_{32} G e^{76}$ is
i. $_{32} G e^{77}$
ii. $_{33} A s^{77}$
iii. $_{34} S e^{77}$
iv. $_{34} S e^{78}$

Only (i) and (ii)

Only (ii) and (iii)

Only (ii) and (iv)

(ii), (iii), and (iv)

Isotones have same number of neutrons
$_{32} G e^{76} n = 76 - 32 = 44$
1. $_{32} G e^{77} n = 77 - 32 = 45$
2. $_{33} A s^{77} n = 77 - 33 = 44$
3. $_{34} S e^{77} n = 77 - 34 = 43$
4. $_{34} S e^{78} n = 78 - 34 = 44$
So answer is (c)

Q. An isotone of 32​Ge76 is i. 32​Ge77 ii. 33​As77 iii. 34​Se77 iv. 34​Se78