Question

Which of these descries bromine's (Br) location on the periodic table?

O Group 7A, Period 4
O Group 4, Period 7A
O Group 3A, Period 2
O Group 2, Period 3A

Answer 1

Bromine is located in Group 7A, Period 4 on the periodic table, and is part of the highly reactive halogen group.

Step-by-step explanation:

Bromine's (Br) location on the periodic table is Group 7A, Period 4. Bromine is a halogen, which is part of Group 7A (or Group 17) in the periodic table. The halogens have very reactive nonmetal elements that exist in nature predominantly as diatomic molecules, like fluorine (F2), chlorine (Cl2), bromine (Br2), and iodine (I2). Each halogen has a general electron configuration of ns²np5, which indicates the presence of seven valence electrons, making them highly reactive and just one electron short of a full electron shell.

Answer 2

O Group 7A, Period 4

Step-by-step explanation:

To find the location of bromine on the periodic table, we must known its period and group on the periodic table.

Bromine is made up of 35 electrons.

Its electronic configuration is:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵

From this configuration, the number of energy levels here is 4 so the element bromine is in period 5

Since the number of valence electrons is 7, it belongs to group 7

So, period 4 and group 7 is the right choice