Question

Question 1 (1 point)

The electron configurations of two unknown atoms are shown.
Electron Configuration
Based on the electron configuration of each atom, what is the number of valence electrons for each atom?
a Atom X = 1; Atom Y = 1
b Atom X = 1; Atom Y = 7
c Atom X = 10; Atom Y = 10
d Atom X = 11; Atom Y = 17

Answer 1

b Atom X = 1; Atom Y = 7

Step-by-step explanation:

a valence electron is an electron in the outer shell

So X has 1 in outer shell

Y has 7 in outer shell