alleryUsing the formula for shell capacity, what is the maximum number of electrons the M shell (n = 3) can hold?
A8
B18
C2
D32
Answer & Solution
Correct answer: B. 18
1. Shell capacity is given by $2n^2$.
2. For the M shell, $n = 3$.
3. Capacity $= 2 \times 3^2 = 2 \times 9 = 18$.
4. Rule out A (8 is the L shell) and C (2 is the K shell).
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 2 "Periodic Classification of Elements", p.33_
Keep practising Unit 1C1: Periodic Trends in Atomic Properties
Browse all Unit 1C1: Periodic Trends in Atomic Properties questions for Maharashtra SSC (Class 10), or explore more Chemistry topics.
Related questions
In which block of the modern periodic table are the nonmetals found?An element has the electronic configuration 2, 8, 2. To which group and period of the modeIn the halogen family (group 17), which member exists as a solid at room temperature?The tendency of a nonmetal atom to accept electrons and form an anion, which increases acrHow does the metallic character of elements change while moving down a group?The tendency of a metal atom to lose its valence electrons and form a cation is called itsAmong the period-2 elements Li, Be, B, C, N, O whose atomic radii are 152, 111, 88, 77, 74What happens to atomic size as one moves down a group of the modern periodic table?