Question

11. Which of the following pair is isodiapheres?
a. Cand Na b. Mg and Na
c. He and o d. 2C and N​

Answer 1

ccccccccccccccccccccccccccccccccccccccccccccccccc

Answer 2

Answer:

[c] He and O

Explanation:  isodiaphers are which has same A-2z value

here A = mass number and z = atomic number

for helium A = 4 and z = 2      A-2z = 0

for oxygen A = 16 and z = 8     A-2z = 0

in option d what is 2C ?