Periodic Trends in Properties of Elements

Question 1

Effective Nuclear Charge (Z sub eff)

Answer 1

The actual magnitude of positive charge that is experienced by an electron in the atom

Question 2

Atomic Radius

Answer 2

The distance between the nucleus and its valence shell

Question 3

The atomic radius _______ from top to bottom down a group and _______ from left to right across a period

Answer 3

increases; decreases

Question 4

Ionization energy (IE)

Answer 4

the minimum energy required to remove an electron from an atom in the gas phase

Question 5

Electron Affinity (EA)

Answer 5

the energy released when an atom in the gas phase accepts an electron

Question 6

Ionic Radius

Answer 6

The radius of a cation or an anion

Question 7

Cations will always be _____ than their atoms

Answer 7

smaller

Question 8

Anions will always be _____ than their atoms

Answer 8

larger

Question 9

Isoelectronic Series

Answer 9

a series of two or more species that have identical electron configurations but different nuclear charges