Protons, Electrons & Neutrons
Element
Atomic Number
Periods & Groups
100
This element has 5 protons, electrons, and neutrons.
Boron
100

This element has the atomic mas of 197.

gold

100
This elements symbol O give the atomic number.
8
100
Period 2 group 1
Lithium
200
This element has 8 protons, electrons and neutrons.
Oxygen
200

This element has the atomic mass of 12.

carbon

200
This elemnet has the symbol of Ne, give the atomic number.
10
200
Group 4 period 2
Zirconium
300
This element has 26 protons, neutrons and electrons?
Iron
300

This element has the atomic mass of 131.

krypton

300
This element has the symbol of Sn, give the atomic number.
50
300
Period 3 group 7
Rhenium
400
This element has 82 protons, neutrons and electrons.
Lead
400

This element has the atomic mass of 65.

zinc

400
This element has the symbol of Al, give the atomic number.
13
400
Period 4 group 17
Iodine
500
This element has 86 protons, neutrons and electrons.
Radon
500

This element has the atomic mass of 89.

yttrium

500
This element has the symbol of At give the atomic number.
85
500
Period 7 group 18
Oganesson
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