1.Iridium
2.Po
3.40
4.151.964 u + 0.001 u
5.Ithium,sodium,potassium,rubidium,francium,caesium
6.Silicon is a metalloid
7.Group 6
8. I don't know
9. I don't know
10. 108
11.Period 1
12. I don't know
13. 36 protons
14. symbol is Na
15.Ni
Please mark me brainliest, this took me so long.Sorry i didn't know 8,9 and 12
