Unit 2

Front

What property of metals allows them to be both malleable and ductile?

Back

The electrons involved in bonding among metal atoms are equally shared and form nondirectional bonds.

Front

Which species has a central atom with less than an octet of electrons?

Back

BH₃

Front

Which species has two lone pairs of electrons?

Back

H₂O

Front

What does it mean for two atoms to have the same atomic radius?

Back

It means that the distance from the nucleus to the outermost electron shell is the same for both atoms.

Front

What is the bond angle in the C2H4 molecule?

Back

The H-C-H bond angles are closest to 120°.

Front

Define malleability in metals.

Back

Malleability is the ability of a metal to be hammered or pressed into thin sheets without breaking.

Front

Define ductility in metals.

Back

Ductility is the ability of a metal to be drawn into wires without breaking.

Front

What is a Lewis diagram?

Back

A Lewis diagram is a representation of a molecule that shows the arrangement of electrons around atoms.

Front

What is the significance of lone pairs in molecular geometry?

Back

Lone pairs affect the shape of a molecule and can influence bond angles.

Front

What is an alloy?

Back

An alloy is a mixture of two or more elements, where at least one is a metal.