Question

what is the position of element X whose atomic number is 19 in periodic table​

Answer 1

Answer:

Explanation:

Here, x equals to potassium

a)Electronic configuration:- 4s1

b)It belongs to period 4 of Modern periodic table, and it's valency is 1,-1

c)When potassium burns with oxygen and it liberated hydrogen and , the resulting alkaline solution turns red litmus to blue which means it's a base.