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Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom2 Marks
Question
An element has $Z = 7$. What is the valency of the element? Also name the element.
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Answer

Atomic No. $= 7$
$E.C = 2, 5$
Valency of given element $= 3$
Given element is $NITROGEN$.

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