Question

Alkaline earth metals have valency 2 this means that their position in the modern periodic table is in....

Answer 1

Answer:

its position is 2 A period in periodic table

Answer 2

Answer:

The position of alkaline earth metals in the modern periodic table is in Group 2.

Explanation:

1. Alkaline earth metals are the metals which are found inside the earth.

2. We know that, metal oxides are basic in nature.

3. These metals can be easily dissolved in water at particular temperatures.

4. Hence, these are alkaline in nature ( bases which dissolve in water ).

5. The arrangement of the elements in the modern periodic table is done on the basis of their electronic configuration.

6. The period number of an element shows the number of shells of that element.

7. While the group number shows the valency of that element.

8. For example, in group 1, all the elements have valency 1.

1. H → 1

2. Li → 2, 1

3. Na → 2, 8, 1

4. K → 2, 8, 8, 1

Hence, all the elements belonging to the group 1 have valency 1.

Similarly,

Alkaline earth metals having valency 2 belong to group 2 in the modern periodic table.