Question

nitrogen has seven protons, seven neutrons, and seven electrons. what is the atomic mass of nitrogen? 7u 21u 14u 0u

Explanation:

Step1: Recall atomic mass formula

Atomic mass = number of protons + number of neutrons.

Step2: Identify number of protons and neutrons

Number of protons = 7, number of neutrons = 7.

Step3: Calculate atomic mass

Atomic mass = 7 + 7 = 14 u.

Answer:

C. 14 u