Question

I. 1 Mark Questions : 1) The name of 16th group elements in the periodic table is ----------- a) Oxygen (or) Chalcogen family b) Carbon family c) Nitrogen (or) Chalcogen family d) Boron family 2) Based on which of the following Henry Moseley demonstrated characteristics of elements. a) X - Radiation decay b) β-Radiation decay c) γ - Radiation decay d) None of the above 3) The elements present in 16th group------------ a) O,S,Se, Te,Po b) F, Cl, Br, I c) N.P, AS, Sb d) C, Si, Ge, Sn, Pb 4) Which block has metals, non metals and metalloid? a) S block b) P block c) d block d) f block 5) Inert gases belongs to ------------ a) 17 Group b) 18 Group c) 16 Group d) 13 Group​

Answer 1

Answer:

question-1 is a,the question-2 is a ,the question-3 is a,the question-4 is b,the question-5 is B

Answer 2

The answers to the following questions are given below as:-

1). The name of the 16th group elements in the periodic table is Oxygen or Chalcogen family. Group 16 is known as the Chalcogen family because all the elements of this group have a tendency to form ores. Hence, option 'A' is correct.

2). Henry Moseley demonstrated characteristics of elements based on the X-radiation Decay. He studied the X-ray spectra of different elements and then concluded that the properties of elements are the function of Atomic numbers. Hence, option 'A' is correct.

3). Group 16th is known as the Oxygen family. So, The elements present in the 16th group are O, S, Se, Te, and Po. Hence, option 'A' is correct.

4). S-block primarily contains metals of high reactivity, D-block also contains all metals having vacant d orbital, F-block mostly contains radioactive elements and P-block is the only block that contains metals, non-metals, and metalloids. Hence, option 'B' is correct.

5). Inert gases belong to group 18, also known as a noble gas family. Hence, option 'B' is correct.

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