BOBCARD Ltd. Interview Questions and Answers

The symbol of magnesium is Mg.

• The symbol Mg is derived from the Latin word 'magnesium'.

• Magnesium is a chemical element with atomic number 12.

• It is a shiny gray solid and is commonly found in minerals such as dolomite and magnesite.

The symbol of potassium is K.

• The symbol K comes from the Latin word 'kalium', which is where the element gets its name.

• Potassium is a chemical element with atomic number 19.

• Potassium is a soft, silvery-white metal that reacts violently with water.

The symbol of aluminium is Al.

• The symbol Al is derived from the Latin word 'alumen'.

• Aluminium is a chemical element with atomic number 13.

• Aluminium is a silvery-white, soft, nonmagnetic metal.

• Aluminium is the most abundant metal in the Earth's crust.

The symbol of hydrogen is H.

• The symbol for hydrogen is H, derived from its Latin name 'hydrogenium'.

• Hydrogen is the lightest and most abundant element in the universe.

• Hydrogen is represented by the chemical symbol H on the periodic table.

The symbol of calcium is Ca.

• The symbol for calcium is Ca, derived from its Latin name 'calcium'.

• Calcium is a chemical element with atomic number 20.

• It is a soft gray alkaline earth metal.

• Calcium is essential for living organisms, including humans, and is found in bones and teeth.

• Calcium is commonly used in supplements and in the production of cement.