Question

question 3 of 10 which of the following elements has the largest first ionization energy? a. carbon (c) b. boron (b) c. oxygen (o) d. nitrogen (n)

Explanation:

First - ionization energy generally increases across a period from left to right in the periodic table due to increasing nuclear charge and decreasing atomic radius. Boron is to the left of carbon, nitrogen, and oxygen in the second - period. Carbon is to the left of nitrogen and oxygen. Nitrogen has a half - filled 2p sub - shell which gives it extra stability, making it harder to remove an electron compared to oxygen. So, nitrogen has a higher first - ionization energy than oxygen.

Answer:

D. Nitrogen (N)