Question

Define the terms valance shell and valence electrons​

Answer 1

Answer:

Valence shell is the outermost shell of every element.

while,

Electrons in the outer shell of an atom that is responsible for the chemical properties of the atom are known as valence electrons.

for suppose

for Ca electronic configuration is 2,8,8,2

so there are 4 shells and 2 valence electrons.

thank u

Explanation: