Question

6 fill in the blank 1 point the symbol for chlorine is type your answer... 7 numeric 1 point what is the atomic number of magnesium? answer 8 numeric 1 point what is the atomic number of copper? answer

Explanation:

Chlorine's chemical symbol is from the periodic - table. Magnesium has an atomic number of 12 and copper has an atomic number of 29, which are fixed values in the periodic table.

Answer:

1. Cl
2. 12
3. 29