RRB Group D 27-Sep-2018 Shift 1 Solved Paper

Question : 50 of 100

Marks: +1, -0

Which of the following inert gases is placed in period 4 of the periodic table?

Solution:

A period 4 element is one of the chemical elements in the fourth row (or period) of the periodic table. The fourth period contains 18 elements, beginning with potassium

({K})

and ending with krypyon (Kr).

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