Question

Pls answer the question
urgent help ​

Answer 1

answer:

a) most metallic element is B because B is the most metallic element due to its-

• it has more shells
• it has more election in valence shell

b) D because when we move left to right in period atomic radii decreases

c) atomic no of C = 12

electronic configuration = 2,8,2

charge on it = +2

atomic no of F = 17

electronic configuration = 2,8,7

charge on it = -1

formula =

CF2