alleryStart learning →The K shell can hold a maximum of:
A4 electrons
B2 electrons
C8 electrons
D18 electrons
Answer & Solution
Correct answer: B. 2 electrons
1. K shell has principal quantum number n = 1.
2. Capacity = 2 * n^2 = 2 * 1 = 2.
3. So K shell holds at most 2 electrons.
4. Hydrogen has 1 and helium has 2 in the K shell.
_Source: Selina Concise Chemistry ICSE Class 9, Ch 4 'Atomic Structure'_
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