Chemistry
An element 'A' needs 4 electrons to attain stable electronic configuration of the nearest noble gas — Neon. An element 'B' needs 1 electron to attain stable electronic configuration of the nearest noble gas — Argon.
The covalent compound formed between A & B is :
- AB3
- A4B
- A2B4
- AB4
Chemical Bonding
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Answer
AB4
Reason — Electronic configuration of A = 2, 4
Element A needs 4 electrons to attain Neon configuration as it has 4 valence electrons. Therefore, valency of A = 4.
Electronic configuration of B = 2, 8, 7
Element B needs 1 electron to attain Argon configuration as it has 7 valence electrons. Therefore, valency of B = 1.
AB4 is the correct formula.
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