21.
Which one of the following is true about metallic character when we move from
to right in a period and top to bottom in a group?
Decreases in a period and increases along the group
b) Increases in a period and decreases in a group
c) Increases both in the period and the group
d) Decreases both in the period and in the group
Answers
Answer:
Metallic character decreases as you move across a period in the periodic table from left to right. This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell. Metallic character increases as you move down an element group in the periodic table.
Explanation:
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Answer:
a) Decreases in a period and increases along the group
Explanation:
Group:- Due to this, the tendency of the atom to lose electrons increases further. The metallic character of an atom is its tendency to lose electrons. Therefore, the following trend is observed. The metallic character of elements increases while going down the group.
Period:- While going from left to right within a period,the outermost orbit remains the same. On the other hand, an atom of a non-metal has a tendency to form an anion by accepting electrons from outside into its valence shell. Hence, metallic character goes on decreasing while going from left to right in a period.