Question

11th chemistry periodic table 1 to 20​

Answer 1

Explanation:

where the last digit is greater than 8 just subtract it with 6

Answer 2

Hydrogen H

Helium He

Beryllium Be

Boron B

Carbon C

Nitrogen N

Oxygen O

Flourine F

Neon Ne

Sodium Na

Magnesium Mg

Aluminum Al

Silicon Si

Phosphorus P

Sulphur S

Chlorine Cl

Argon Ar

Potassium K

Calcium Ca