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Electronic Configuration of D-Block Elements

Electronic co...

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Electronic configuration is done according to 2n^2 or 2,8,8,18?

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Q. According to the formula 2n² there should be 18electrons but we put only 8 electrons. Why??

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Write the electronic configuration of Oxygen, Chlorine and Sodium according to the Bohr-Bury Scheme.
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Q. State, whether the following statements are true or false:
(i) Fluorine has higher electron affinity than chlorine.
(ii) Similar electronic configuration is repeated after intervals of 2, 8, 8, 18 and 32.
(iii) Al₂O₃ is an amphoteric oxide.
(iv) On moving horizontally across a period, number of valency electrons increases from one to eight.
(v) All members of zero group are non-metals.
(vi) The elements with higher electron affinity have higher ionization potential.

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Electronic Configuration of D-Block Elements

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