Question

The atomic number and mass number of atoms of five elements are given below: [5]

Element Atomic number Mass number

A 5 10

B 7 14

C 9 19D 12 24

E 16 32

a. What is the valency of each of these five atoms​

Answer 1

Answer:

what is this

mark me as brainliest

Answer 2

Answer:

A)Boron +3

B)Nitrogen -3

C)Fluorine -1

D)Magnesium +2

E)Sulphur -2

Hope it helps!!!