Identifying Electrons and Atomic Structure

10 electrons total

11 electrons in nucleus

11 electrons total

12 electrons total

Cations gain electrons, anions lose electrons

Cations lose electrons, anions gain electrons

Both cations and anions gain electrons

Both cations and anions lose electrons

It lost one; now seven electrons

It gained one; now nine electrons

It gained two; now ten electrons

It lost two; now six electrons

The innermost electron shell

Any shell with paired electrons

The outermost electron shell

The shell nearest protons

Its group number in A-groups

Its atomic mass in amu

Its block label s, p, d, f

Its period number across rows

Three shells around the nucleus

One shell around the nucleus

Two shells around the nucleus

Four shells around the nucleus

Count electrons in inner shells

Subtract period number from mass

Match the group number in A-groups

Use the atomic number digits

Two shells and five valence electrons

Three shells and seven valence electrons

Two shells and three valence electrons

Three shells and five valence electrons

First two shells hold four electrons total

Period 1 orbital holds two electrons only

Valence shell must have exactly eight electrons

All shells can hold up to eight electrons

Ten electrons maximum in those orbitals

Six electrons maximum in those orbitals

Two electrons maximum in those orbitals

Eight electrons maximum in those orbitals