Question

The family of metals having valency one. Write the names from the description

Answer 1

Great question.

The family of Metal having one valence electrons are known as Alkali metals .

Alkali metals are belong to the first group of periodic table .
Each metals having only 1 electrons in his outermost cell.
The main properties of Alkali are they rapidly reacts with water.
Alkali metals due to their high Resistivity do not occurs in the pure form. 

Names of Alkali :-

{Atoms and their electronic configuration}H

Li³------→ Electronic configuration ⇒ [He],2s¹
Na¹¹---→ Electronic configuration ⇒ [Ne],3s¹
K¹⁹----→ Electronic configuration ⇒ [Ar],4s¹
Rb³⁷--→ Electronic configuration ⇒ [Kr],5s¹
Cs⁵⁵--→ Electronic configuration ⇒ [Xe],6s¹
Fr⁸⁷---→ Electronic configuration ⇒ [Rn],7s¹

So we clearly see that alkali metals having one electron in the valence cell.


Hope it Helps :-)

Answer 2

Answer:

Alkali metals

Explanation:

the family of metals having valency one known as alkali metals