Question

if Z = 19 what would be the valency of element also give the name of the element​

Answer 1

Answer:

Potassium (K)

Explanation:

Electronic Configuration - 2,8,8,1

Thereby, Valence electrons - 1

Hence Valency is also 1

By the modern periodic table,

Element Z is Potassium

Answer 2

'Z' is a symbol for the Atomic Number of the element which is unique for all elements.

Atomic no. = No. of Protons = No. of electrons = 19

Electronic distribution = 2,8,8,1

Valency = +1 ( It donated one electron to possess an octet.)

Name of the element whose Atomic no. is 19 is POTASSIUM (K).

Hope it helps.