Question

An element X has both the shells K and L completely filled with electrons.The element has atomic number – 10
(a) Identify the element X (b)In which group of the periodic table is this element Placed?
(C) Write its electronic configuration.
(d) What is the valency of the element? ​

Answer 1

Answer:

A. Neon

B. Group 0 or 8

C. 1S² 2S² 2P⁶

D. 0. it is a stable element.

Answer 2

Answer:

(a) Ans:- Element X is Neon ( Ne) .

(b) Ans:- It is placed in group 18 of the modern periodic table.

( c) Ans:- The electronic configuration of Neon is 2,8 .

(d) And:- The valency of the element is Zero (0) .

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