Question

Complete the following details of elements given below in table.

(9 marks)

Element with Number of atomic mass Number of electron Number of neutron family

Si28

Ne20

Be9

Answer 1

Answer:

silicon

carbon family 14 family

atomic mass number 28

electrons

neutrons 14

Neon

18 group nobel gas / inert gas/ 0 group family

at. mass 20

electron 10

neutrons 10

Beryllium

2 group alkaline earth metals

at. mass 9

electrons 4

neutrons 5