The following diagram shows a part of the periodic table in which the elements are arranged according to their atomic numbers. (The letters given here not the chemical symbols of the elements):
a 3 | b
4 |
| c 5 | d 6 | e 7 | f 8 | g 9 | h 10 |
i 11 | j
12 |
| k 13 | l 14 | m 15 | n 16 | o 17 | p
18 |
(i) Which element has a bigger atom
(i) Element a has a bigger atom as the size of an atom decreases from left to right in a period.
(ii) Element k has a higher valency as valency of k = 3 and the valency of o = 1.
(iii) Element i is more metallic as the metallic character decreases from left to right in a period.
(iv) Element g is more non-metallic as the non-metallic character increases from left to right in a period.
(v) Elements b or j are metals with a valency of 2 as they have 2 valence electrons and are placed on the left side of the periodic table.
(vi) Elements f or n are nonmetals with a valency of 2 as they have 2 valence electrons and are placed on the right side of the periodic table.
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