Atomic Numbers

what is the atomic No. of carbon (C)?

• 5

• 4

• 6

• 7

Atomic No. of Argon (Ar)

• 15

• 17

• 18

• 19

Atomic No. of calcium ( Ca)

• 18

• 19

• 21

• 20

Atomic No. of fluorine ( F)

• 8

• 5

• 9

• 10

Atomic No. of Chlorine (Cl)

• 16

• 17

• 15

• 19

Atomic No. of Hydrogen (H)

• 2

• 1

• 3

• 0

Atomic No. of beryllium (Be)

• 2

• 5

• 9

• 4

Atomic NO. of Nitrogen (N)

• 6

• 8

• 7

• 9

Atomic No. of Sodium (Na)

• 10

• 12

• 11

• 13

Atomic No. of Potassium (K)

• 18

• 20

• 17

• 19