What is the electron configuration for N (nitrogen)?A.1s22s22p23s1B.1s22s22p3C.1s22s23s23p1D.1s21p5SUBMITarrow_backPREVIOUS

Step 1: Break Down the Problem

We need to determine the correct electron configuration for nitrogen (N), which has an atomic number of 7. This means it has 7 electrons.

Step 2: Relevant Concepts

The electron configuration indicates the distribution of electrons among the various atomic orbitals. The order of filling is based on the Aufbau principle, Pauli exclusion principle, and Hund's rule.

Step 3: Analyze Each Option

1. A. $1s^2 2s^2 2p^2 3s^1$: This configuration has a total of 9 electrons. Incorrect.
2. B. $1s^2 2s^2 2p^3$: This configuration has a total of 7 electrons. Correct.
3. C. $1s^2 2s^2 3s^2 3p^1$: This configuration has a total of 9 electrons. Incorrect.
4. D. $1s^2 1p^5$: The p subshell starts from the second energy level, so this is incorrect.

Step 4: Verify and Summarize

The correct configuration for nitrogen, having 7 electrons, is indeed B.

Final Answer

The electron configuration for nitrogen (N) is $1s^2 2s^2 2p^3$. Thus, the correct answer is B.