Question

Which of these elements is a transition metal? francium (Fr) beryllium (Be) chromium (Cr) gallium (Ga) bismuth (Bi)

Answer 1

The element that is the transition metal is Cr or  chromium

Answer 2

Chromium (Cr) is a transition metal

Step-by-step explanation:

Transition metals are a series of elements present in the center of the periodic table. They are also referred to as the 'd-block' elements as it is the d-orbital that gets progressively filled with electrons with the increase in atomic number.

Based on the given examples:

1) Francium (Fr) is an alkali metal: group 1

2) Beryllium (Be) is an alkaline earth metal: group 2

3) Chromium (Cr) is a transition metal : group 6

4) Gallium (Ga) is a post-transition metal: group 13

5) Bismuth (Bi) is also a post-transition metal: group 15