Groups of 3 - Science #1

Can you name these groups of 3?
Quiz by Pigface
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Last updated: June 6, 2017
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First submittedJune 5, 2017
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Group of 3
Answer
1st 3 elements of the Periodic Table.
Hydrogen
Helium
Lithium
The tiny particles making up an atom.
Protons
Neutrons
Electrons
The 3 states of matter.
Solid
Liquid
Gas
3 triangle types.
Equilateral
Isosceles
Scalene
3 largest bones in the human body.
Femur
Tibia
Fibula
Group of 3
Answer
The 3 scientific disciplines.
Natural
Formal
Social
The 3 largest planets in our Solar System.
Jupiter
Saturn
Uranus
The first 3 moons of Saturn discovered.
Titan
Lapetus
Rhea
The 3 names of the discoverer of the lightbulb.(If you're American that is!)
Thomas
Alva
Edison
The 3 largest Organs of the human body.
Skin
Liver
Brain
+4
Level 42
Jun 11, 2017
please allow singulars for proton neutron electron
+1
Level 76
Dec 27, 2019
Seconded. Also, it's Iapetus with an i, not an L.
+1
Level 76
Jan 20, 2021
Bro, for real. Singular needs to be accepted.