Avobenzone is a chemical compound commonly used in sunscreen formulations to absorb the full spectrum of UVA rays. To determine the correct molecular formula of avobenzone from the given options, we need to compare the provided formulas and identify the correct one.
Let's consider each option:
(A) [tex]$C_{22} H_{22} O_{3}$[/tex]
- Consists of 22 carbon atoms, 22 hydrogen atoms, and 3 oxygen atoms.
(B) [tex]$C_{20} H_{24} O_{3}$[/tex]
- Consists of 20 carbon atoms, 24 hydrogen atoms, and 3 oxygen atoms.
(C) [tex]$C_{21} H_{23} O_{3}$[/tex]
- Consists of 21 carbon atoms, 23 hydrogen atoms, and 3 oxygen atoms.
(D) [tex]$C_{20} H_{22} O_{3}$[/tex]
- Consists of 20 carbon atoms, 22 hydrogen atoms, and 3 oxygen atoms.
Avobenzone's molecular structure is specifically known to have the composition represented correctly by one of these options. Upon careful evaluation, we conclude that the correct molecular formula for avobenzone is:
(B) [tex]$C_{20} H_{24} O_{3}$[/tex]
This formula accurately describes the proportions of carbon, hydrogen, and oxygen atoms present in the avobenzone molecule. Hence, the correct answer is option (B).
