The valency of elements in group I A is:

0

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

2

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $1$
Alkali metals (IA) have $n s^{1}$ configuration.
They have the tendency to lose one electron and hence, show $+ 1$ oxidation state.
Therefore, valency is $1$ .

Suggest Corrections

Similar questions

Give scientific reasons:

1. Atomic size increases down the group.

2. Metallic character decreases from left to right in a period.

3. Elements in the same group show same valency.

Based on the group valency of elements state the formula for the following giving justification for each:

(i) Oxides of 1st group elements.

(ii) Halides of the elements of group 13.

(iii) Compounds formed when an element of group 2 combines with an element of group 16.

An element A belongs to the third period and group 1 of the periodic table. Find out :

i. The number of valence electrons in its atoms.

ii. Valency of the element.

iii. Name of the element.

Join BYJU'S Learning Program