Question

Why do scientists sometimes discuss the possibility of silicon as a basic element for life?(1 point)
Responses

Silicon is similar in atomic mass to carbon.
Silicon is similar in atomic mass to carbon.

Silicon has an inner shell of electrons that is similar to carbon.
Silicon has an inner shell of electrons that is similar to carbon.

Silicon is similar in abundance to carbon.
Silicon is similar in abundance to carbon.

Silicon has an outer shell of electrons that is similar to carbon.

Answer 1

The correct response is:

**Silicon has an outer shell of electrons that is similar to carbon.**

Silicon and carbon both have four electrons in their outer shell, allowing them to form similar types of covalent bonds and compounds, which is why scientists consider silicon as a possible basis for alternative forms of life.