Which of the following elements is present in the fourth period of Group 3A?
A) Sb
B) Ga
C) In
D) Si
E) Tl

Question

Quizplus · Accepted Answer

Group 3A is also known as Group 13 and includes the elements boron (B), aluminum (Al), gallium (Ga), indium (In), and thallium (Tl). The fourth period on the periodic table corresponds to the row containing elements with atomic numbers 19-36, including Ga. Therefore, the correct answer is B) Ga.

Which of the Following Elements Is Present in the Fourth