Correct option is D
The correct answer is (d) 32.
· The maximum number of electrons in a shell is determined by the formula 2n², where n is the shell number (principal quantum number).
For the N shell:
· n=4
· Maximum electrons = 2n2=2×(4)2=2×16=32
Key Points:
· The K shell (n=1) can hold up to 2×(1)2=2 electrons.
· The L shell (n=2) can hold up to 2×(2)2=8 electrons.
· The M shell (n=3) can hold up to 2×(3)2=18 electrons.
· The N shell (n=4) can hold up to 2×(4)2=32 electrons.
Information Booster:
· Electrons fill the shells in order of increasing energy, as described by the Aufbau principle.
· Each shell consists of subshells (s, p, d, f), and electrons occupy them based on their energy levels.
· Beyond the N shell, higher shells like O and P exist, but they are not completely filled for most elements found in nature.