Element "A" belong to 3rd period and group 1 of the modern period table what is the atomic number of the element? which element in the same period has same valency as element A. which element in the group is not metal. Which metal in the group is least reaction
write the formula of the compound formed by A with the most reactive non metal
Answers
Answer:
(a) Al has the highest valency of 3. As it belongs to group IIIA, it has 3 electrons in its valence shell. So, its valency is 3.
(b) Na has the largest atomic radius as the atomic radius decreases across the period.
(c) As we move from left to right in a period the chemical reactivity of a metal decreases and of non-metal increases. Here given are metals and hence Na is most reactive as it is the first element of period 3.
Explanation:
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Answer:
here it is
Explanation:
The element is Sodium (Na).
Hydrogen, Lithium etc in group 1. has the same valency as Sodium.
Hydrogen is not a metal in group 1.
lithium is least reactive in group 1.
most reactive non metal is fluorine.
when sodium reacts with florine it forms NaF.
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