periodicity

The atomic radius increases down the group and decreases across the period.

• True

• False

The electronegativity of elements generally increases across a period and decreases down a group.

• True

• False

The first ionization energy generally increases down a group and decreases across a period.

• False

• True

The atom needs more energy to lose one electron than to lose two electrons.

• true

• false

The second ionization energy is always greater than the first ionization energy for an element.

• False

• True

The amount of energy needed to remove one electron from the atom.

• Electron affinity
• Electronegativity
• Atomic radius
• Ionization energy

The atomic radius generally decreases as you move from left to right across a period due to increased nuclear charge.

• False

• True

Methods used to measure the bond length are:

• spectroscopy

• electron diffraction

• Infrared

• X-ray

The radius of ……………………….. is smaller than of its atom.

• anion
• neutral atom
• cation
• isotope

The ionization energy of noble gases is higher than alkali metals.

• True

• False