Question

atomic number 1to 20

Answer 1

Hydrogen 1 Sodium 11
Helium 2. Magnesium 12.
Lithium 3. Aluminium 13
beryllium 4. SILICON 14
Boron 5. Phosphorus 15
carbon 6. Sulphur 16
nitrogen 7. Chlorine 17
oxygen 8. Argon 18
fluorine 9 Potassium 19
Neon 10 Calcium 20

Answer 2

FOLLOWING ARE THE ATOMIC NUMBERS OF THE DIFFERENT ELEMENTS :

Hydrogen - 1

Helium - 2

Lithium - 3

Beryllium - 4

Boron - 5

Carbon - 6

Nitrogen - 7

Oxygen - 8

Fluorine - 9

Neon - 10

Sodium - 11

Magnesuim - 12

Aluminium - 13

Silicon - 14

Phosphorus - 15

Sulphur - 16

Chlorine - 17

Argon - 18

Potassium - 19

Calcium - 20

HOPE YOU GOT THEM... :)