Question

the number of neutrons is depositive zinc ion with mass number 70 is
A)34
B)36
C)38
D)40​

Answer 1

Answer:

40

Explanation:

As zinc is 30th in the periodic table so no of neutrons = 70-30=40

Answer 2

Answer:

D) 40 Neutrons

Explanation :

Zinc

Mass number = 70

Atomic number = 30

So, no.of protons = 30

No.Of neutrons = 70- 30 = 40