Question

In which shell are the valence electrons of the elements in Period 2 found?
(1) 1 (3) 3
(2) 2 (4) 4

Answer 1

b 2 
is which shell are the valence electrons of the elements in period 2 found

Answer 2

Answer:

(2) 2

Explanation:

The period of an element indicates in which shell are the valence electrons. So, all the elements of the Period 2 have their valence electrons in the 2nd shell.  

A period in the periodic table is a row of chemical elements.