Question

Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is

• A. \( Mg<Ca<P<Cl \)
• B. \( Cl<P<Ca<Mg \)
• C. \( P<Cl<Mg<Ca \)
• D. \( P<Mg<Cl<Ca \)

Hint:

The atomic radii generally increase down a group and decrease across a period in the periodic table.

Answer 1

The Correct Option is B

The atomic radii of elements generally increase as you move down a group and decrease as you move across a period from left to right. Based on this trend, the correct order of increasing atomic radii is \( Cl<P<Ca<Mg \).

Step 2: Conclusion.
The correct order of increasing atomic radii is \( Cl<P<Ca<Mg \), corresponding to option (b).