Atomic # 1

Name: Hydrogen

Atomic mass: 1.008

Atomic #: 2

Name: Helium

atomic mass: 4.003

Atomic # 3

Name: Lithium

Atomic mass: 6.941

Atomic # 4

Name: Beryllium

atomic mass: 9.012

Atomic #5

Name: Boron

Atomic mass: 10.811

Atomic #6

Name: Carbon

Atomic mass: 12.011

Atomic # 7

Name: Nitrogen

atomic mass: 14. 007

Atomic # 8

Name: Oxygen

Atomic Mass: 15.999

Atomic # 9

Name:  Fluorine

Atomic mass: 18.998

Ne

Atomic # 10

Name: Neon

Atomic Mass: 20.180

Atomic # 11

Name: sodium

Atomic mass: 22.990

Atomic # 12

Name : Magnesium

Atomic Mass: 24.305

Atomic # 13

name: Aluminum

Atomic Mass: 26.982

Atomic # 14

Name: Silicon

Atomic Mass: 28.086

Atomic # 15

Name: Phosphorous

Atomic mass: 30.974

Atomic #16

Name: Sulfur

Atomic mass:  32.066

Atomic # 17

Name: Chlorine

Atomic Mass: 35.453

Atomic # 18

Name: Argon

Atomic mass: 39.948

Atomic # 19

Name:  Potassium

atomic mass: 39.098

Atomic # 20

Name:Calcium

Atomic mass: 40.078