MCQ practice · SSC Chemistry Board questions · Chapter 4: Periodic Table
Boron is an element of which group?
Think it through first, then pick an option.
- a 13
- b 14
- c 15
- d 16
Answer and explanation
Correct answer: a 13
B(5) → 2s²2p¹, 2 + 1 + 10 = 13.
Why the other options are wrong
- b 14: Group 14 holds carbon. The answer is 13.
- c 15: Group 15 holds nitrogen. The answer is 13.
- d 16: Group 16 holds oxygen. The answer is 13.
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