Question

How many protons (p) and electrons (e) are found in a Se²-ion?

A) 34 p, 36 e
B) 34 p, 32 e
C) 32 p. 34 e
D) 36 p, 34 e
E) 34 p, 34 e

Answer 1

A) 34 p, 36 e

Step-by-step explanation:

Se has atomic number of 34 which means there are 34 protons and 34 electrons in neutral state.

Se(2-) has 2 extra electrons so there will be 34 protons and 36 electrons