Chemistry - PERIODIC TABLE Question with Solution | TestHub
ChemistryPERIODIC TABLEIntroduction, NamingMedium2 minQB
ChemistryMediumsingle choice
Valency of which of the following element is not equal to the valence electron
Options:
Answer:
D
Solution:
The valency of an element is its combining capacity. For Na, Mg, and C, valency equals valence electrons (1, 2, 4 respectively). For O, with 6 valence electrons, its valency is 2 (8 - 6), not 6, as it tends to gain 2 electrons to achieve a stable octet.
Therefore, the correct answer is O.
Stream:JEESubject:ChemistryTopic:PERIODIC TABLESubtopic:Introduction, Naming
⏱ 2mℹ️ Source: QB
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