# The number of elements in Group 13 is

$\begin {array} {1 1} (A)\;4 & \quad (B)\;5 \\ (C)\;6 & \quad (D)\;7 \end {array}$

Boron group elements incorporate any of the six chemical elements forming Group 13 (IIIa) of the periodic table. The elements are boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and element 113 (briefly named ununtrium [Uut]).
6
(C) is the correct answer.
answered Jul 24, 2014
edited Nov 16, 2017