Element Symbols
Element Groups
Properties of Elements
Periodic Trends
History of Periodic Table
100

Oxygen

What is the element with the symbol O?

100
The element type in the 1A group

What are alkali metals?

100

The most reactive non-metal element.

What is fluorine?

100

The only trend that increases as you go down a period.

What is atomic radius?

100

The Russian Chemist who created the first periodic table.

Who is Dmitri Mendeleev?

200

Krypton

What is the element with the symbol Kr?

200

Halides

What are compounds with halogens in their atomic structure?

200

The alkali metal that humans mostly get through bananas.

What is potassium?

200

The difference of this trend between two elements determines how covalent or ionic their bond will be.

What is electronegativity?

200

The scientist that first discovered neutrons.

Who is James Chadwick?

300

Antimony

What is the element with the symbol Sb?

300

The element with the highest proton amount in the Alkaline-Earth Metals.

What is radium?

300

The element with the lowest second melting point as a metal, after mercury.

What is gallium?

300

The radius of an atom that has more or less electrons than their protons.

What is ionic radius?

300

The scientists who created the current version of the periodic table

Who is Glenn Seaborg?

400

Ytterbium

What is the element with the symbol Yb?

400

Type of metal that is highly coveted by countries mostly due to their use in electronics. Their biggest producer is China.

What are Rare Earth Elements?

400

The metal that has the highest electrical conductivity in the periodic table.

What is silver?

400

The element with the highest electron affinity in the periodic table despite being in the third period.

What is chlorine?

400

The only element that Niels Bohr’s model worked on and the one he tested on.

What is hydrogen?

500

Ununennium

What is the element with the symbol Uue?

500

The group of elements found under lanthanides in the periodic table.

What are actinides?

500

The radioactive element that Marie Curie discovered and named after her beloved country.

What is Polonium?

500

The trend that is mostly dependent on the nuclear charge and atomic radius of an atom

What is first ionization energy?

500

This alchemist was the first person to scientifically make the discovery of an element. Phosphorus.

Who is Robert Boyle?