Four Compounds Listed Below Represent an Exception to the Octet

question 29

Multiple Choice

Four compounds listed below represent an exception to the octet rule when determining their respective Lewis formulas. Which one of the following molecules follows the octet rule when determining its Lewis structure?

• A) PF₅
• B) BeCl₂
• C) NO
• D) CO₂
• E) XeF₄

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Definitions:

Null Hypothesis

A statement that there is no difference or effect, typically to be tested against an alternative hypothesis proposing a difference or effect.

Significance Level

The probability of rejecting the null hypothesis when it is actually true; a threshold chosen by the researcher to indicate the level of evidence needed to reject the null hypothesis.

Kruskal-Wallis Test

A nonparametric statistical test used to compare three or more independent samples to determine if they originate from the same distribution.

P-value

The probability of obtaining a test statistic at least as extreme as the one that was actually observed, assuming that the null hypothesis is true.