How can I determine the number of valence electrons there are in a molecule?

Author Question: How can I determine the number of valence electrons there are in a molecule? (Read 725 times)

futuristic

Hero Member
Posts: 638

on: Sep 20, 2013

Referring to the periodic table?
Is it true that the number of valence electrons = the last digit of the group number they belong to?

So C (carbon) would have four valence electrons since it belongs to group 14 right?

notis

Hero Member
Posts: 596

Reply #1 on: Sep 20, 2013

Yes, but that only works for groups 1-2, and 13-18.

Need homework help now?

Ask unlimited questions for free

Ask a Question

« previous next »

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.