Which diagram shows the correct number of valence electrons for a carbon atom?

The right answer is C.

In the ground state, carbon only shows two single electrons. Its tetravalence is explained by the fact that the carbon redistributes two electrons on its L layer, allowing to have four connecting electrons. Raising an electron on a higher electron orbital is called the excitation of an atom.

Methane (CH4) is archetypal of carbon compounds: the tetravalent carbon atom forms four simple covalent bonds with four hydrogen atoms. The carbon atom is called tetravalent because it can establish up to four different single bonds with other atoms or establish, as in the case of alkenes, two single bonds and a double bond, or as in the case of alkynes , a single bond and a triple bond.

the answer is:

carbon dioxide

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: