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MHT-CET · Periodic Classification (Class 11 — ~20% weight) · Quiz

Periodic Classification (Class 11 — ~20% weight) — quick quiz

5 real MHT-CET questions on Periodic Classification (Class 11 — ~20% weight). Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 4

EASY

The atomic radius of sodium is 186 pm, and the atomic radius of magnesium is 160 pm. Both elements are in period 3. What is the primary reason for this difference in atomic radius?