Question

) Slate whether A is metal or non-metal?
b) The atomic number of Nitrogen (N), oxygen (0) and Fluorine (F) is 7, 8, and 9
respectively.
1) What is the number of valence electrons in N and F?
ii) Name the element having the smallest and largest radii out of the three elements
Support your answer by giving reason.
atomic size? How will it change while moving down the​

Answer 1

Explanation:

the valncy of N is

N=7=2,5

valncy= 8-5=3

valncy of F=1

F=9,2,7

8-7=1