Question

Make a table of atomic mass and electronic configuration of first 20 elements in Modern periodic table. ​

Answer 1

Explanation:

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Answer 2

H Hydrogen

Atomic Number: 1 Protons: 1Atomic Mass: 1.0079

He Helium

Atomic Number: 2 Protons: 2 Atomic Mass4.0026

Li Lithium

Atomic Number 3 Protons: 3 Atomic Mass: 6.941

Be Beryllium

Atomic Number: 4Protons: 4 Atomic Mass: 9.0122

B Boron

Atomic Number: 5Protons: 5 Atomic Mass: 10.811

C Carbon

Atomic Number: 6 Protons: 6Atomic Mass:12.0107

N Nitrogen

Atomic Number: 7Protons: 7 Atomic Mass:14.0067

O Oxygen

Atomic Number:8Protons: 8 Atomic Mass:15.9994

F Fluorine

Atomic Number: 9Protons: 9 Atomic Mass18,9984

Ne Neon

Atomic Number:10Protons:10 Atomic Mass20.1797

Na Sodium

Atomic Number:11 Protons:11Atomic Mass:22.9897

Mg Magnesium

Atomic Number:12 Protons:12Atomic Mass:24.305

Al Aluminum

AtomicNumber:13 Protons:13Atomic Mass26.9815

Si Silicon

AtomicNumber14 Protons14 Atomic Mass28.0855

P Phosphorus

AtomicNumber:15Protons:15 Atomic Mass30.9738

S Sulfer

AtomicNumber:16 Protons:16 Atomic Mass32.065

Cl Chlorine

Atomic Number:17 Protons:17 Atomic Mass35.453

Ar Argon

Atomic Number18 Protons:19 Atomic Mass 39.948

K Potassium

AtomicNumber:19 Protons:19AtomicMass39.0983

Ca Calcium

Atomic Number20 Protons20 Atomic Mass40.078