An atom or group of atoms that has a positive or negative charge.
What is an Ion?
100
The common name for a positively charged ion.
What is a Cation?
100
Calcium, Bromine and Titanium in order of increasing ionization energy.
What is Ca, Ti, Br?
100
He organized elements into a table based on both atomic mass and various properties.
Who is Dmitri Mendeleev?
100
The term given to metals that can be "hammered into a sheet without breaking".
What is Malleable?
200
Energy required to remove an electron from an atom.
What is Ionization Energy?
200
Nonmetals typically form this type of ion.
What is an Anion?
200
What is the most electronegative element on the periodic table?
What is Fluorine?
200
He organized the ions into triads based on physical and chemical properties alone.
Who is J. W. Dobereiner?
200
[Ar]4s1
What is the shorthand electron configuration for Potassium?
300
Measures the ability of an atom to attract electrons when the atom is in a compound.
What is Electronegativity?
300
When elements in Group 1A such as sodium and potassium form ions, they almost always have this overall charge.
What is + or +1?
300
What is Oxygen, Lithium and Boron in order of increasing ionic size?
What is B, Li, O?
300
He reorganized Mendeleev's periodic table after determining the atomic number for each of the elements. (But they ended up being mostly the same)
Who is Henry Moseley?
300
These two periods of the periodic table contain 32 elements.
What are Period 6 and 7?
400
Another name for the column of the periodic table.
What is Group?
400
Elements in this group of the periodic table almost always form ions with an overall -1 charge.
What are Halogens?
400
This trend increases as you go down within a group of the periodic table due to the increase of electron cloud layers where electrons need to be placed.
What is atomic radius?
400
The groups that make up the representative element.
What is 1A-7A or 1-2,13-17?
400
Elements containing properties of both metals and nonmetals.
What is a Metalloid?
500
One half the distance between the nuclei of two atoms of the same element when the atoms are joined.
What is Atomic Radius?
500
Aluminum will lose three electrons, forming this ion.
What is Al+3 ?
500
When Ionization energy is high, this trends will most likely also be high.
What is Electronegativity?
500
The transition metals and inner transition metals are also refers to as these two "blocks".
What are the d block and f block?
500
Part of the Periodic Table characterized by the presence of electrons in the d orbitals as well as metallic properties.