Write the electronic configuration of the element with atomic num… - Vidyadip

Question

Write the electronic configuration of the element with atomic number $17.$ Indicate the valency of the element.

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Answer

Atomic No. $= 17 E.C. = (2, 8, 7)$ Valency $= 8 -$ no. of valence electrons Valency $= 8 - 7$ Valency $= 1$

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