Question

chemistry 1 (lp - 5061 - ck - 01) / molecular modeling and lewis structures evaluation
in a molecular modeling kit, a black ball with 4 holes most likely represents the element _______.
○ sulfur
○ carbon
○ magnesium
○ hydrogen

Explanation:

Carbon has a valence of 4, meaning it can form 4 covalent bonds. In molecular modeling kits, the number of holes in a ball representing an atom corresponds to its valence. A black ball with 4 holes is used to represent carbon as it commonly forms 4 - bond structures in molecules. Sulfur usually forms 2 bonds, magnesium forms 2 ionic - like bonds in many cases and hydrogen forms 1 bond.

Answer:

B. carbon