physical science

posted by .

identify the mass number and atomic number of a chlorine atom that has 17 protons and 18 neutrons?

  • physical science -

    mass number is 17 + 18 = 35 - # protons + # neutrons.
    atomic number is 17 = number of protons.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Final Exam- Honors Physical Science

    how can you determine the number of protons, electrons,neutrons, atomic number, and the atomic mass of an element using the periodic table?
  2. Chemistry

    The standard atom for the atomic masses of all the elements is the atom of carbon which has 6 protons and 6 neutrons (12C) and is assigned the atomic mass of exactly 12. Under this standard, the atomic mass of iron, atomic number 26, …
  3. Science

    1. Which statement about subatomic particles is NOT true?
  4. Chemistry

    I have to write a bunch of atomic symbol for these isotopes and I don't understand how to I do it. (a) atomic number=53, number of neutrons=79 I looked at the periodic table for 53 so the element is Iodine. So They gave the atomic …
  5. Chemistry

    41. A neutron atom of potassium has an atomic number of 19 and an atomic mass number of 39. Find its number of protons, neutrons, and electrons. This is what I got- Protons: 19 Neutrons: 20 Electrons: ?
  6. US History

    41. A neutron atom of potassium has an atomic number of 19 and an atomic mass number of 39. Find its number of protons, neutrons, and electrons. This is what I got- Protons: 19 Neutrons: 20 Electrons: ?
  7. chemistry

    1.what is meant by atomic number of an element?
  8. Science

    1. Consider a neutral atom that has 17 electrons A.) how many protons does it have b.) what is it's atomic number c.)which element is it 2. List the following for an atom with 33 protons and 42 neutrons a.) the name of the element …
  9. science

    1.the modern atomic model includes orbiting the nucleus. which of the following parts of dalton's was disproved by the discovery of the electron atoms are tiny particles atoms cannot be divided into smaller parts atoms have specific …
  10. Science

    if an atom has 17 electrons and its mass number is 35, calculate the following: number of protons, atomic number, and number of neutrons. i think there would be: an atomic number of 17, there would be 17 protons, and there would be …

More Similar Questions