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Attempts 127

Which of the following atoms will have an overall positive charge?

  1. A
    9 protons, 10 neutrons, 10 electrons
  2. B
    10 protons, 10 neutrons, 10 electrons
  3. C
    11 protons, 12 neutrons, 10 electrons
  4. D
    14 protons, 14 neutrons, 18 electrons

Topic Flashcards

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Question

What simple calculation determines the net charge of an atom or ion?

Answer

Net Charge = (Number of Protons) – (Number of Electrons).

Question

An atom has 13 protons and 10 electrons. What is its net charge?

Answer

+3 (Charge = 13 - 10 = +3).

Question

What is the name for an atom that has lost one or more electrons and therefore has a positive charge?

Answer

A cation.

Question

In a neutral atom, the number of electrons must equal the number of ______.

Answer

Protons.

Question

If an ion has a charge of +2 and has 12 protons, how many electrons does it have?

Answer

10 electrons (Charge = Protons – Electrons; +2 = 12 – e; e = 10).

Mini Quiz

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Neutrons contribute to the overall charge of an atom.
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