Question

is an atom of element a
is an atom of element b
is an atom of element c
a compound has this particle diagram:
using this information, what is the correct chemical formula of this compound?
a ab₂c
b a₄bc₄
c a₂b₂c₄
d a₂bc₂

Explanation:

Step1: Count the number of each atom

• Count the number of blue (element A) atoms: There are 2 blue atoms.
• Count the number of red (element B) atoms: There are 2 red atoms.
• Count the number of green (element C) atoms: There are 4 green atoms.

Step2: Write the chemical formula

The chemical formula is written by putting the number of each atom as a subscript. So the formula is \(A_{2}B_{2}C_{4}\).

Answer:

C. \(A_{2}B_{2}C_{4}\)