Question

please help me asap i will mark u as brainly and give u 10 points

Answer 1

7 u

Atomic mass = Mass of protons + mass of neutrons

⇒ Atomic mass = 4 u + 3 u = 7 u.

Tip: Electrons have negligible mass.

Mass of e- = 1/2000 × mass of p+.

Answer 2

Answer:

7

Explanation:

To find the Atomic Mass, you just add the protons and neutrons together.