The electronic configuration of a element is 2k 8l 5m predict its valency
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its valency is 3. because in m shell the total number of electrons are 8. it needs 3 more to complete its octate. or it has to lose 5. in this case its easy to gain electrons than to lose as it requires less energy to gain.
guptalavish12345:
Show physically
what do u mean by show physically..clear it once
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8-5= 3 is the valency
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