The First 20 Elements

Question 1

Hydrogen

Answer 1

Z=1 A=1

Question 2

Helium

Answer 2

Z=2 A=4

Question 3

Lithium

Answer 3

Z=3 A=7

Question 4

Beryllium

Answer 4

Z=4 A=9

Question 5

Boron

Answer 5

Z=5 A=11

Question 6

Carbon

Answer 6

Z=6 A=12

Question 7

Nitrogen

Answer 7

Z=7 A=14

Question 8

Oxygen

Answer 8

Z=8 A=16

Question 9

Flourine

Answer 9

Z=9 A=19

Question 10

Neon

Answer 10

Z=10 A=20

Question 11

Sodium

Answer 11

Z=11 A=23

Question 12

Magnesium

Answer 12

Z=12 A=24

Question 13

Aluminium

Answer 13

Z=13 A=27

Question 14

Silicon

Answer 14

Z=14 A=28

Question 15

Phosphorus

Answer 15

Z=15 A=31

Question 16

Sulphur

Answer 16

Z=16 A=32

Question 17

Chlorine

Answer 17

Z=17 A=35

Question 18

Argon

Answer 18

Z=18 A=40

Question 19

Potassium

Answer 19

Z=19 A=39

Question 20

Calcium

Answer 20

Z=20 A=40