Periodic Trends

Which periodic group has the smallest atomic radius?

• Alkali metals
• Halogens
• Noble Gases
• Transition metals

Which of these elements in group 1A has the largest atomic radius?

• cesium

• rubidium

• potassium

• sodium

Which element in period 4 has the highest electronegativity?

• potassium

• calcium

• copper

• bromine

Which group 4A element has the highest ionization energy?

• carbon

• tin

• silicon

• lead

The sodium atom loses an electron to form a sodium ion (Na⁺). Which statement is correct with respect to its atomic radius?

• The sodium ion has a larger radius than the atom.

• The sodium ion has a smaller radius than the atom.

• The sodium ion and the sodium atom radii are the same size.

• The sodium ion has twice the radius of the sodium atom.

Which property determines an atom's ability to attract electrons shared in a chemical bond?

• ionization energy

• atomic radius

• electronegativity

• ionic radius

Ionization Energy is

• The ability of an atom to attract another atom's electrons

• The ability of an atom to react with water

• The energy required to remove an atom's electron

• The distance from the nucleus to the outer electrons

Why does radius decrease as you move across a period?

• because electrons are being added

• because protons are being added

• because energy levels are being lost

• because energy levels are being added

As you move left to right across a period, ionization energy

• increases

• decreases

• says the same

Which of the following atoms would have the largest radius?

• chlorine

• silicon

• sodium

• argon