Question

Please do answer I’ll make you brainliest

Answer 1

Answer:

12

Explanation:

hope it helps make my answer as brainlist

Answer 2

1) 9 , 19 , 10 , 9 , 9 , fluorine

2) 16, 32 , 16, 16, 16, sulphur

3) 12, 24 , 12, 12, 12 , magnesium

4) 1, 2, 0, 1, 1, hydrogen

5) 1, 1, 0, 1, 1, hydrogen