Question

please give the answer​

Answer 1

7) answers ;-

Fe - Fe2O3

Cu - Cu(OH)2 . CuCo3

Ag - AgS

Al - Al2O3

8) CATIONS ;

Mg+

K+

Na+

Ca+

H2+

ANIONS ;

• Br
• Cl
• Fr
• I

9) ATMOSPHERIC REFRACTION is that process.

1. the sun rays eneters in a rain droplet

then the internal reflection takes place and due to defraction phenomenon 7 lights pass out and when it occurs at a big level it forms RAINBOW .