Na,Mg and Al are the elements of 3rd period of modern periodic table having group no. 1,2 and 13 respectively .which one of these elements has the-(a)highest valency (b)largest atomic radius (c) maximum chemical reactivity . justify your answer stating the reason for each.
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longest atomic radius _ Na.
highest valency _ Al.
max react Nair &Mgr r more reactive bcoz they r s-block elements.
highest valency _ Al.
max react Nair &Mgr r more reactive bcoz they r s-block elements.
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al will have the highest valency
mg most reactive
mg most reactive
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