Consider the following statements in `._(38)^(90)Sr^(2+)`
1. Atomic number is 36 .
2. Number of electrons is 38.
3. Number of neutron is 52.
4. Neutron of proton is 38.
Which of these are correct ?

Options

A. 1 and 2
B. 2 and 3
C. 3 and 4
D. 1 and 4

Answer

C

Explanation

In `._(38)^(9)Sr^(2+)`, Atomic number of `Sr^(2+)` Is 38
Mass number of `Sr^(2+)` is 90
Number of neutrons = `90-38 =52` ,
Number of protons = 38
Number of electrons = `38-2 = 36`