Question

Answer the following: (a) Write
chemical formula of magnesium hydroxide.
(b) Write chemical equation when hydrogen
reacts with chlorine to give hydrogen
chloride. (c) Write symbol and electronic
configuration of Aluminium.​

Answer 1

QUESTION

• write chemical formula of magnesium hydroxide.
• write chemical equation when hydrogen reacts with chlorine to give hydrogen chloride
• write the symbol and electronic configuration of Aluminium

$\huge\underline{\underline{\bold{\red{a}\green{n}\pink{s}\orange{w}\blue{e}{r}}}}$

• Mg(OH)2
• H2 + CI 2 = 2HCI
• symbol : AI, electronic configuration : [Ne] 3s2,3p1

additional information

• what is the formula of compounds?

The chemical formula of a compound is a symbolic representation of its chemical composition.chemical formula provide insight into the elements that constitute the molecules of a compound and also the ratio in which the atoms of these elements combine to form such molecule.

• three example of compounds

1. water :. formula : H2O - hydrogen 2+ oxygen...
2. hydrogen peroxide: formula : H2 O2 - hydrogen 2 + oxygen 2 ....
3. salt : formula :NaCI- sodium+chlorine

$\huge\underline{\underline{\bold{\red{T}\green{h}\pink{a}\orange{n}\blue{k}{s}}}}$

Answer 2

Answer:

1) Mg(OH)2

CHEBI:6637 - magnesium dihydroxide

Magnesium hydroxide is the inorganic compound with the chemical formula Mg(OH)2. It occurs in nature as the mineral brucite.

2)Hydrogen chloride may be formed by the direct combination of chlorine (Cl2) gas and hydrogen (H2) gas; the reaction is rapid at temperatures above 250 °C (482 °F). The reaction, represented by the equation H2 + Cl2 → 2HCl, is accompanied by evolution of heat and appears to be accelerated by moisture.

3) In writing the electron configuration for Aluminium the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for aluminium go in the 2s orbital. ... Therefore the Aluminium electron configuration will be 1s22s22p63s23p1.