Chem Sem 1 ACP review

Front

As you move down a group in the periodic table, what happens to the atomic radius?

Back

The atomic radius increases because you add more and more shells (energy levels).

Front

What is the correct Lewis structure for the compound PBr3?

Back

Structure D is the correct Lewis structure for PBr3.

Front

What is the Lewis Dot Structure for ammonia (NH3)?

Back

The Lewis Dot Structure for NH3 shows nitrogen in the center with three hydrogen atoms bonded to it and one lone pair of electrons on nitrogen.

Front

What is the name of the ionic compound Cs2S?

Back

The name of Cs2S is cesium sulfide.

Front

What is the name of N2O3?

Back

The name of N2O3 is dinitrogen trioxide.

Front

Define atomic radius.

Back

Atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

What is a Lewis Dot Structure?

Back

A Lewis Dot Structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.

Front

How do you determine the number of valence electrons in an element?

Back

The number of valence electrons can be determined by looking at the group number of the element in the periodic table.

Front

What is the significance of the octet rule in chemistry?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.