Question

A part of the periodic table has been shown below.
Groups →1 ,2,13,14,16,17,18
period=
1=. c
2=. a e,g
3=. b. d. f
Answer the Following questions on the basis of position of the elements into
above table.
a) Which element is a noble gas?
b) Which element is most electro negative? Give reason.
c) Write the electronic configuration​

Answer 1

Answer:

(i) -element in group 18 will be a noble gas

(ii) -g will be most electronegative on going left to right electronegativity increases

(iii) -whoose electronic configuration

Answer 2

Below are given the answers to the questions.

Explanation:

(a) Which element is a noble gas?

The elements present in 18 group are noble gases.

Noble gases are Helium (He), Neon (Ne) , Argon (Ar) and Krypton (Kr).

(b) Which element is most electro-negative? Give reason.

Fluorine is the most electro negative element. It has the ability to gain one electron and attains the configuration of a noble gas to get a stable electronic configuration and stability.

(c) Write the electronic configuration​ of Fluorine?

The electronic configuration of fluorine is 1s^2, 2s^2, 2p^5