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Periodic Table: First 20 Elements

Chemistry20 CardsCreated 4 months ago

This deck covers the first 20 elements of the periodic table, including their atomic number, symbol, atomic mass, and the number of protons, neutrons, and electrons.

Hydrogen

Atomic Number: 1
Symbol: H
Atomic Mass: 1
Protons: 1
Neutrons: 0
Electrons: 1

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Key Terms

Term
Definition

Hydrogen

Atomic Number: 1
Symbol: H
Atomic Mass: 1
Protons: 1
Neutrons: 0
Electrons: 1

Helium

Atomic Number: 2
Symbol: He
Atomic Mass: 4
Protons: 2
Neutrons: 2
Electrons: 2

Lithium

Atomic Number: 3
Symbol: Li
Atomic Mass: 7
Protons: 3
Neutrons: 4
Electrons: 3

Beryllium

Atomic Number: 4
Symbol: Be
Atomic Mass: 9
Protons: 4
Neutrons: 5
Electrons: 4

Boron

Atomic Number: 5
Symbol: B
Atomic Mass: 11
Protons: 5
Neutrons: 6
Electrons: 5

Carbon

Atomic Number: 6
Symbol: C
Atomic Mass: 12
Protons: 6
Neutrons: 6
Electrons: 6

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TermDefinition

Hydrogen

Atomic Number: 1
Symbol: H
Atomic Mass: 1
Protons: 1
Neutrons: 0
Electrons: 1

Helium

Atomic Number: 2
Symbol: He
Atomic Mass: 4
Protons: 2
Neutrons: 2
Electrons: 2

Lithium

Atomic Number: 3
Symbol: Li
Atomic Mass: 7
Protons: 3
Neutrons: 4
Electrons: 3

Beryllium

Atomic Number: 4
Symbol: Be
Atomic Mass: 9
Protons: 4
Neutrons: 5
Electrons: 4

Boron

Atomic Number: 5
Symbol: B
Atomic Mass: 11
Protons: 5
Neutrons: 6
Electrons: 5

Carbon

Atomic Number: 6
Symbol: C
Atomic Mass: 12
Protons: 6
Neutrons: 6
Electrons: 6

Nitrogen

Atomic Number: 7
Symbol: N
Atomic Mass: 14
Protons: 7
Neutrons:7
Electrons: 7

Oxygen

Atomic Number: 8
Symbol: O
Atomic Mass: 16
Protons: 8
Neutrons: 8
Electrons: 8

Fluorine

Atomic Number: 9
Symbol: F
Atomic Mass: 19
Protons: 9
Neutrons: 10
Electrons: 9

Neon

Atomic Number: 10
Symbol: Ne
Atomic Mass: 20
Protons: 10
Neutrons: 10
Electrons: 10

Sodium

Atomic Number: 11
Symbol: Na
Atomic Mass: 23
Protons: 11
Neutrons: 12
Electrons: 11

Magnesium

Atomic Number: 12
Symbol: Mg
Atomic Mass: 24
Protons: 12
Neutrons: 12
Electrons: 12

Aluminum

Atomic Number: 13
Symbol: Al
Atomic Mass: 27
Protons: 13
Neutrons: 14
Electrons: 13

Silicon

Atomic Number: 14
Symbol: Si
Atomic Mass: 28
Protons: 14
Neutrons: 14
Electrons: 14

Phosphorus

Atomic Number: 15
Symbol: P
Atomic Mass: 31
Protons: 15
Neutrons: 16
Electrons: 15

Sulfur

Atomic Number: 16
Symbol: S
Atomic Mass: 32
Protons: 16
Neutrons: 16
Electrons: 16

Chlorine

Atomic Number: 17
Symbol: Cl
Atomic Mass: 35
Protons: 17
Neutrons: 18
Electrons: 17

Argon

Atomic Number: 18
Symbol: Ar
Atomic Mass: 40
Protons: 18
Neutrons: 22
Electrons: 18

Potassium

Atomic Number: 19
Symbol: K
Atomic Mass: 39
Protons: 19
Neutrons: 20
Electrons: 19

Calcium

Atomic Number: 20
Symbol: Ca
Atomic Mass: 40
Protons: 20
Neutrons: 20
Electrons: 20