Question

Which of the following will have a larger radius than zinc ? Gallium (Ga) Magnesium (Mg) Aluminum (Al) Strontium (St)

Answer 1

Answer:

Strontium (St)

Explanation:

The atom that will have a larger radius than zinc is strontium, Sr.

Atomic radius is defined as the half of the inter-nuclear distance between two covalently bonded atoms of non-metallic elements or half of the distance between two nuclei in the solid state of metals.

• Across the period atomic radii decreases progressively due to the increase in nuclear charge.
• Down a group atomic radii increase progressively due to the successive shells of electrons being added.
• Since strontium satisfies the criteria, it has the larger atomic radius.