Question

The electronic configuration of an element is 2,8,4. Answer the questions given below from it , he element
1. To which group does the element belong ?
2. What is the atomic number of the element ?

Answer 1

Answer:

Electronic configuration Number of valence electrons Name of the Element

(a) 2, 8, 2 2 Magnesium

(b) 2, 8, 1 1 Sodium

(c) 2, 8 ,7 7 Chlorine

(d) 2,1 1 Lithium