Chemistry

Question Analysis
This question involves comparing atomic radii of elements in the same period as carbon.
The main focus is on applying the period trend (left to right) to find a smaller radius.

Key Concept Explanation
In the same period, elements to the right have a smaller atomic radius because they have more protons (higher nuclear charge) pulling the electrons closer.

Step-by-Step Solution
1. Locate carbon (C): Period 2, Group 14.
2. Analyze each option:
A. B: Left of C in Period 2 → larger radius.
B. N: Right of C in Period 2 → smaller radius.
C. Si: B...