Question

Atomic number of element is 19.how can you say the element belong which group and ​

Answer 1

Explanation:

Now, for atomic number 19, the number of valence electron is 1 in the s subshell, And we are aware that the group number corresponds to the number of valence electrons of that element, So, the group to which the element P belongs is 1.

Answer 2

Answer:

Atomic Number = 19

Electronic Configuration = 2, 8, 8, 1

Valency (number of electrons in the outermost shell) = 1

As, the valency of the element is 1, so the given element belongs to GROUP 1.