Answer» Correct Answer - Option 2 : Silicon
The correct answer is Silicon. - Commercial fertilizer means a fertilizer or other substance containing one or more essential available plant nutrients that is distributed for its plant nutrient content and is designed for use and has value in promoting plant growth.
- The Fertilizers typically provide nutrients , in varying proportions they are:
- (i) six macronutrients: nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and sulfur (S); and (ii) eight micronutrients: boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn) and nickel (Ni).
- Silicon is a chemical element with the symbol Si and atomic number 14.
- It is a crystalline solid, hard, and brittle with a blue-grey metallic lustre, and is a tetravalent metalloid and semiconductor.
- Silicon is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, and lead are below it
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