Step 1-Count the number of atoms of each element on each side of the arrow.
Step 2-Balance atoms using coefficients.
Step 3-Check your work.
1. Na + MgF2  NaF + Mg

2. Mg + HCl  MgCl2 + H2

3. Cl2 + KI  KCl + I2

1) 2Na + MgF2 —> 2NaF + Mg. Explain: You first look at how many F are in each side, then balance it, and look at the rest of the elements and balance them. 2) Mg + 2HCl —> MgCl2 + H2. Explain: look at the number of Cl in each side, balance it, and check to make sure both sides have the same amounts of each element. 3) Cl2 + 2KI —> 2KCl + I2. Explain: first look at the number of Cl on each side, and balance it, then look at the number of K on each side, and balance it, then check to make sure both sides are equal.

Ithink it is quantity of plants

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.