alleryWhich property generally INCREASES across a period?
AAtomic radius
BMetallic character
CNumber of shells
DElectronegativity
Answer & Solution
Correct answer: D. Electronegativity
1. Across a period, nuclear charge rises and atoms contract.
2. Smaller atoms with greater nuclear pull attract shared electrons more strongly.
3. So electronegativity increases across a period.
4. Atomic radius and metallic character decrease, and shell count is constant.
_Source: Selina Concise Chemistry ICSE Class 10, Ch 1 'Periodic Table' (aplustopper.com extract)_
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