Question

An element 'a' has atomic number 16. To which group and period does it belong

Answer 1

the element is sulphur .
as the atomic number is 16 it's electronic configuration is

$1s {}^{2 } 2s {}^{2} 2p {}^{6} 3s {}^{2} 3p {}^{4}$
as it's last electron is in p subshell, therefore it will be in p-block. also as it is in 3p subshell it will be in third period. And as it has 6 electrons in M shell it will be in 10+6= 16th group.



or electronic configuration of sulphur =2, 8,6.

as it has outermost electrons in M shell therefore it is in 3rd period. And as it has 6 electrons in M shell it will be in 10+6= 16th group.


hope the answer helps......

Answer 2

it's group is 16th and period is third