Identify the correct statements from the following. (i) In the periodic table, about $78 \%$ of elements are…

Identify the correct statements from the following. (i) In the periodic table, about $78 \%$ of elements are metals. (ii) In a group, the metallic character decreases from top to battom and in a period the nonmetallic character decreases from left to right. (iii) The element Ho belongs to $f$-block.
  1. i, ii, iii
  2. ii, iii
  3. i, iii
  4. i, ii

Solution

In the periodic table, about 78% of elements are metals. The element Ho belongs to f-block. The f-block elements are the lanthanides and actinides and are called inner transition elements. 57 La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb70 89Ac, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No102

Asked in: AP EAMCET 2018 (23 Apr Shift 2)

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