Q18 of 60 Page 140

Which of the given elements A, B, C, D and E with atomic numbers 2, 3, 7, 10 and 30 respectively belong to the same period?

the elements B(Lithium), C(Nitrogen), D(Neon) all lie in the same 2nd period.

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The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?

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Which of the following statements about the Modern Periodic Table is correct?

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The elements A, B, C, D, and E have atomic numbers 9, 11, 17, 12 and 13 respectively. Which pair of elements belongs to the same group?

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Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table?