Question

Atomic no. Of only representative elements sequence is a) 3,33,53,87 b) 2,10,22,36 c)7,17,25,37,48 d) 10,35,57,88

Answer 1

Answer:

The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. The structure of the table shows periodic trends.

Explanation:

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Answer 2

Answer:

a, d) Elements of 5 and p-block elements are called representative elements. Elements of f-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.

(a) 3 – Group 1, 33 – group 15, 53 – group 17 and 87 – group 1.

(d) 9 – Group 17, 35 – Group 17, 51 – Group 15, 88 – Group 2.