Which of the following sequences contain atomic numbers of only representative elements ?(I) 3, 33, 53, 87(II) 2, 10, 22, 36(III) 7, 17, 25, 37, 48(IV) 9, 35, 51, 88
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a
I & II are correct
b
II & III are correct
c
I & IV are correct
d
III & IV are correct
answer is C.
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Detailed Solution
Elements of s and p-block elements are called representative elements(except noble gases). Elements of d-block (Z = 21-30; 39-48; 57 and 72-80; 89 and 104-112) are called transition elements while those of f-block (with Z = 58-71 and Z = 90-103) are called inner transition elements.