Question

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.

• A. i, ii, iii
• B. ii, iii
• C. i, iii
• D. i, ii

Answer 1

Answer: (C)

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.

${}^{57}La,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb,Dy,Ho,Er$,

$Tm,Y{b}^{70}$

${}^{89}Ac,Th,Pa,U,Np,Pu,Am,Cm,Bk,Cf,Es,Fm,$

$Md,N{o}^{102}$