The Periodic Table

Scientists

100

This Scientist is known as the Father of the Periodic Table.

Dmitri Mendeleev

200

Johann Dobereiner arranged elements into _______, or groups of three.

Triads

300

He arranged the elements by Atomic Number and is known as the Father of the Modern periodic table.

Henry Moseley

400

Who arranged the elements into a table ordered by atomic mass?

Dmitri Mendeleev

500

Who arranged elements into octaves (groups of 8)?

John Newlands

It's all in the Family

100

This family is full of elements that do not react with others (ex. Ne)

Noble gas

200

This reactive family of metals all have one valence electron. (ex. Sodium)

Alkali Metals

300

Magnesium and Calcium belong to this family.

Alkaline Earth Metals

400

Groups 3-12 are all a part of this family.

Transition Metals

500

This family of nonmetals is full of incredibly reactive elements such as Fluorine.

Halogens

Metal, Nonmetal, or Semimetal

100

Gold (Au)

Metal

200

Sulfur (S)

Nonmetal

300

Bromine (Br)

Nonmetal

400

Boron (B)

Semimetal

500

Neodymium (Nd)

Metal

Ions

100

Negatively charged ions are called...

Anions

200

Which has a larger atomic radius: a N atom or N^3- ion

N^3-

300

Which has a larger atomic radius: a B atom or B³⁺ ion

B atom

400

Cations have a (larger/smaller) atomic radius than their neutral atoms.

smaller

500

Which has a larger atomic radius: Mn, Mn²⁺, Mn³⁺

Mn

What's Trending?

100

Which element has a larger atomic radius: Cadmium (Cd) or Tin (Sn)

Cadmium (Cd)

200

Which element has a higher ionization energy: Cesium (Cs) or Molybdenum (Mo)

Molybdenum (Mo)

300

Which element has a higher electron affinity: Strontium (Sr) or Radium (Ra)

Strontium (Sr)

400

Which element has a higher electronegativity: Sulfur (S) or Aluminum (Al)

Sulfur (S)

500

The amount of energy needed to remove an electron from an atom is called....

Ionization energy