Ask Question
5 July, 07:09

An atom has 18 protons, 18 electrons, and 20 neutrons.

This atom has?

a negative charge

an atomic number of 20

a mass number of 38

a positive charge

+2
Answers (2)
  1. 5 July, 07:10
    0
    mass number of 38

    Explanation:

    Charge is 0 - No. of protons is equal to nom. of electrons, so no charge

    Atomic number is 18 - Atomic number is number of protons

    Mass number is 38 - mass number is number of protons AND neutrons
  2. 5 July, 07:25
    0
    a mass number of 38

    Explanation:

    X This atom has no a negative charge.

    because, number of protons (18) & electrons (18) are same. so, This atom is neutral.

    X This atom has an atomic number of 20.

    Because, it has 18 protons. so, This atom has an atomic number of 18.

    X This atom has a positive charge

    because, number of protons (18) & electrons (18) are same. so, This atom is neutral.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “An atom has 18 protons, 18 electrons, and 20 neutrons. This atom has? a negative charge an atomic number of 20 a mass number of 38 a ...” in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers