Question

The element Q in group 16 has 3 shells .If so 1.Write the period number
2.Find the atomic number
3.Write the subshell electronic configuration of element
4.The element Na react with Q a new compound formed find the chemical formula of the compound

Answer 1

Answer:

The element is sulphur

The atomic no.is 16

The electronic configuration is 2,8,6

The element when combined with Q(S)

It's forms sodium sulphide NaS

Answer 2

Answer & Explanation

1. 3

(Hint: period number= Shell number)

2. 16

3. 1s2 2s2 2p6 3s2 3p4

(Hint: 13to 18 grp p block, Group number of P block elements are by adding 12 to the total

number of electrons in the outermost p subshell or adding 10 to the total number of electrons in

the outermost p and s subshell.)

4. Na2Q

(interchanging valency)

hope this'll help you:)