Question

Each energy level contains a different number of sublevels which means each energy level can hold a different amount of electrons. How many electrons does the third energy level hoIf a neutral compound is composed of carbon and hydrogen and you know that it has exactly 2 carbons connected by a double bond, how many hydrogens will the compound have?

A. 2
B. 6
C. 4
D. 8ld?

Answer 1

C. 4

Step-by-step explanation:

The question seems to be split into two parts. Let's address each part separately:

1. How many electrons does the third energy level hold? The third energy level can hold a maximum of 18 electrons. It consists of three sublevels: s, p, and d. The s sublevel can hold 2 electrons, the p sublevel can hold 6 electrons, and the d sublevel can hold 10 electrons. Therefore, the total number of electrons that the third energy level can hold is 2 + 6 + 10 = 18.
2. Neutral compound with 2 carbons connected by a double bond: When two carbons are connected by a double bond, they form an alkene. In a neutral alkene, each carbon forms three sigma (σ) bonds. Since carbon forms four sigma bonds in total, the remaining bond is formed with hydrogen. Therefore, for each carbon connected by a double bond, there will be two hydrogens. In this case, with 2 carbons connected by a double bond, there will be 4 hydrogens in total.

So, the correct answer for the number of hydrogens in the given compound is:

C. 4

i hope this helps!