4) Exceptions to the Octet Rule

What are the three types of exceptions to the octet rule?

an odd number of electrons, less than an octet, and more than an octet

An odd number of electrons, less than an octet, and more than an octet are the three types of what?

types of exceptions to the octet rule

characteristics of an odd number of electrons?

rare, unstable, and reactive

rare, unstable, and reactive are the characteristics of what?

an odd number of electrons

characteristics of fewer than eight electrons

still has an even number of electrons, usually with B or Be

Still has an even number of electrons, usually with B or Be are the characteristics of what?

fewer than eight electrons

In fewer than eight electrons, B compounds only has

6 bonding electrons

In fewer than eight electrons, what only has 6 bonding electrons?

B

In fewer than eight electrons, what only has 4 bonding electrons?

Be compounds

In fewer than eight electrons, Be compounds only have?

4 bonding electrons

Halogens never what?

make double or triple bonds

What never makes double or triple bonds?

halogens

Expanded octet =

more than eight electrons

What = more than eight electrons

expanded octet

Only what elements can expand the octet into the d orbitals?

elements in the 3rd period or below

Elements in the 3rd period or below are the only elements that can

expand the octet into the d orbitals