Question

What is the molar mass of silicon?
A. 158.97 g
B. 78.96 g
C. 32.06 g
D. 28.09 g

Answer 1

Hint: Molar mass of an atom is mass of one mole of the elements of that particular atom expressed in gram per mole and if you know atomic number (i.e.number of proton ) and number of neutron by addition of that you will get mass number which is approximately equal to molar mass.

Complete step by step answer:
Silicon is a chemical element with the symbol Si and atomic number 14.
It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor.
It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, and lead are below it. It is relatively unreactive.
Molar mass of Silicon is 28.09 g.
Therefore, the correct answer to this question is option D.

Additional information:
Most silicon is used commercially without being separated, and often with little processing of the natural minerals. Such use includes industrial construction with clays, silica sand, and stone.
Silicates are used in Portland cement for mortar and stucco and mixed with silica sand and gravel to make concrete for walkways, foundations, and roads.
They are also used in whiteware ceramics such as porcelain, and in traditional quartz-based soda-lime glass and many other specialty glasses.

Note: Do you know that silicon is the seventh-most abundant element in the universe and the second-most abundant element on the planet, after oxygen.
About 25 percent of the Earth's crust is silicon. Besides computer chips, silicon has many uses; weirder spots where this element appears include menstrual cups, breast implants, and oven mitts - in the form of silicone.