Chem H Mid Term Review No Mole

Front

Which group 2A element has the largest ionic radius?

Back

Radium has the largest ionic radius among group 2A elements.

Front

What is the chemical name for H3PO4?

Back

Phosphoric acid.

Front

Why does ice float on liquid water?

Back

Ice floats on liquid water because its solid form is less dense than its liquid form.

Front

Predict the ionization energies of sodium (Na), potassium (K), and rubidium (Rb).

Back

Ionization energies decrease down the group: Na > K > Rb.

Front

Which group 4A element has the highest ionization energy?

Back

Carbon has the highest ionization energy among group 4A elements.

Front

Define ionic radius.

Back

Ionic radius is the measure of an atom's ion in a crystal lattice.

Front

What is the trend in ionic radius for group 2A elements?

Back

Ionic radius increases down the group.

Front

Explain the concept of ionization energy.

Back

Ionization energy is the energy required to remove an electron from an atom or ion.

Front

What is the trend in ionization energy for group 1A elements?

Back

Ionization energy decreases down the group.

Front

Define density in the context of states of matter.

Back

Density is the mass per unit volume of a substance.