Flashcard Check 1

Front

What is lattice energy?

Back

Lattice energy is the energy released when gaseous ions combine to form an ionic solid. It is a measure of the strength of the forces between the ions in an ionic compound.

Front

Which ionic compound has greater lattice energy: CaCl2 or KCl?

Back

CaCl2 has greater lattice energy due to the higher charge and smaller size of Ca2+ compared to K+.

Front

Which ionic compound has greater lattice energy: NaCl or KCl?

Back

NaCl has greater lattice energy because Na+ is smaller than K+, leading to stronger ionic bonds.

Front

What is hybridization in chemistry?

Back

Hybridization is the concept of mixing atomic orbitals to form new hybrid orbitals, which can accommodate the bonding of atoms in molecules.

Front

What is the hybridization of nitrogen in NH3?

Back

The hybridization of nitrogen in NH3 is sp3.

Front

What is the hybridization of beryllium in BeF2?

Back

The hybridization of beryllium in BeF2 is sp.

Front

What is the hybridization of carbon in C2H4?

Back

The hybridization of carbon in C2H4 is sp2.

Front

How does ionic charge affect lattice energy?

Back

Higher ionic charges result in greater lattice energy because the electrostatic attraction between ions increases.

Front

How does ionic radius affect lattice energy?

Back

Smaller ionic radii lead to greater lattice energy because ions can get closer together, increasing the electrostatic attraction.

Front

What is the relationship between lattice energy and melting point?

Back

Generally, compounds with higher lattice energy have higher melting points due to stronger ionic bonds.