Question

With reference to the long form of the periodic table fill in the blank spaces with appropriate words.

_______ metals and alkaline ________ metals are placed in groups IA and ___________ respectively on the left hand side of the periodic table.

• A. Alkali, earth
• B. IIA

Answer 1

In the modern periodic table, alkali metals and alkaline earth metals are present in group-1 and 2 respectively.

• However, these groups were written as IA and IIA in the modified Mendeleev's periodic table.
• Alkali metals include Lithium (Li), Sodium (Na), etc.
• Alkaline earth metals include Beryllium (Be), Magnesium (Mg), etc.
• These groups are present on the left-hand side of the periodic table as shown in the image below.

Therefore, alkali metals and alkaline earth metals are placed in groups IA and IIA respectively on the left-hand side of the periodic table.