Question

28. Magnesium bromide is a binary ionic compound. From its formula, MgBr2, how do you know that Mg is the metal?(Pages 567-568)

Answer 1

• Magnesium,Mg:

Magnesium, Mg comes inside the group 2 and period III in the periodic table. Its atomic number is 12 and comes in the category of the alkaline metals.

Step-by-step explanation:

Properties of Magnesium,Mg:

Location inside the periodic table:

• Inside the periodic table all the metals are arranged to the right of the tables given while the semi-metal are arranged in the middle, while the non-metals are at the left of the periodic table.

Atomic size and Electronegativety:

• Its atomic size is very small, and its outer most electrons are tightly bounded to the nucleus.

Electron Configuration:

Its atomic number is 12 and it has only 2 electrons in its outer most shell.

Industrial Importance:

• As the magnesium. Mg is widely regarded as the best element for industrial uses, due it’s low weight and to it’s capability of forming mechanically resistant alloys.

Answer 2

We can know that Mg corresponds to a metal by its properties (eg conduction of electric energy), location in periodic table, etc.

Step-by-step explanation:

Magnesium corresponds to a white-silver metal located in group IIA of the periodic table. It is found in abundance in nature, in rocks, seawater and is widely used in industry (for example for pipes). In the case of the MgBr2 compound, we can see its oxidation state (+2)