Atomic Structure: Isotopes & Ions

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  • 1/13 Questions
    Which particle has the highest atomic mass? - ProProfs

    Which particle has the highest atomic mass?

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Atomic Structure: Isotopes & Ions - Quiz
About This Quiz

Dear all, Hope you all had a light-hearted first lesson with me. Do this quiz and check how much you've learnt and most importantly, try applying concepts to the questions. Have fun!
love, MsKhoo

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  • 2. 
    Which two particles are isotopes of the same element? - ProProfs

    Which two particles are isotopes of the same element?

    Explanation
    Isotopes are atoms of the same element that have the same number of protons but different number of neutrons. Therefore, L and P, L & P, l and p, and l & p are all correct answers because they represent pairs of particles that are isotopes of the same element.

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  • 3. 

    Which is the correct symbol for the element with 8 protons and 10 electrons?

    • N3-

    • O2-

    • O3-

    • F-

    Correct Answer
    A. O2-
    Explanation
    The correct symbol for the element with 8 protons and 10 electrons is O2-. This is because oxygen (O) has 8 protons in its nucleus, and in a neutral atom, it would also have 8 electrons. However, in this case, there are 10 electrons, indicating that the atom has gained 2 extra electrons. When an atom gains electrons, it becomes negatively charged, and the symbol is represented with a superscript minus sign. Therefore, O2- is the correct symbol for the element with 8 protons and 10 electrons.

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  • 4. 

    Which is the correct symbol for an O atom with 8 protons, 9 neutrons and 8 electrons?

    • 16 O 8

    • 17 O 8

    • 18 O 8

    • 18 O 9

    Correct Answer
    A. 17 O 8
    Explanation
    The symbol "17 O" represents an oxygen atom with 8 protons, 9 neutrons, and 8 electrons. The atomic number of an element corresponds to the number of protons in its nucleus, so the atomic number of oxygen is 8. The mass number of an element is the sum of its protons and neutrons, so the mass number of this oxygen atom is 17. Therefore, the correct symbol for this oxygen atom is "17 O" with 8 protons, 9 neutrons, and 8 electrons.

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  • 5. 

    How do I form Li+?

    • Add one electron

    • Remove one proton

    • Remove one electron

    • Add one neutron

    Correct Answer
    A. Remove one electron
    Explanation
    How do you remove protons or neutrons from the nucleus? That requires a HUGE HUGE amount of energy..

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  • 6. 
    Which particle is an atom of a noble gas? - ProProfs

    Which particle is an atom of a noble gas?

    Correct Answer
    M
    m
    Explanation
    Noble gases have full electronic configuration. In this case, M has an electronic configuration of 2.8.

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  • 7. 
    Which two particles are an atom and an ion of the same element? - ProProfs

    Which two particles are an atom and an ion of the same element?

    Correct Answer
    N and O
    N & O
    n and o
    n & o
    Explanation
    N and O have the same proton number belonging to Magnesium.If u chose L and P, they are an example of an isotope.

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  • 8. 

    N3- has __________. 

    • 7 protons and 4 electrons

    • 7 protons and 10 electrons

    • 7 protons and 11 electrons

    • 8 protons and 11 electrons

    Correct Answer
    A. 7 protons and 10 electrons
    Explanation
    p = e ; the number of protons equates the number of electrons when the atom is electrically neutral. In this case, 3 electrons was added to give nitrogen the overall -3 charge.

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  • 9. 
    The table shows the atomic structure of 6 particles, represented by the letters L to Q. The particles are atoms or ions. The letters are not the symbol of the elements. Which 2 particles are ions? - ProProfs

    The table shows the atomic structure of 6 particles, represented by the letters L to Q. The particles are atoms or ions. The letters are not the symbol of the elements. Which 2 particles are ions?

    Correct Answer
    O and Q
    O & Q
    o and q
    o & q
    Explanation
    Yes they have the same number of protons but different number of electrons.

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  • 10. 

    Cu2+ and Zn2+ are examples of ________.

    • Anions

    • Cations

    • Isotopes

    • Molecules

    Correct Answer
    A. Cations
    Explanation
    Cu2+ and Zn2+ are examples of cations because they are positively charged ions. Cations are formed when an atom loses one or more electrons, resulting in a net positive charge. In the case of Cu2+ and Zn2+, these ions have lost two electrons each, giving them a +2 charge. Anions, on the other hand, are negatively charged ions that have gained one or more electrons. Isotopes are different forms of the same element with varying numbers of neutrons, and molecules are combinations of atoms held together by chemical bonds.

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  • 11. 

    Fe 2+ and Fe3+ are different __________. 

    • Ions

    • Isotopes

    • Elements

    • Atoms

    Correct Answer
    A. Ions
    Explanation
    Fe2+ and Fe3+ are different ions because they have different charges. Fe2+ has a +2 charge, meaning it has lost two electrons, while Fe3+ has a +3 charge, indicating the loss of three electrons. This difference in charge is what distinguishes them as separate ions.

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  • 12. 

    How many electrons does Li+ atom have?

    • 0

    • 1

    • 2

    • 3

    Correct Answer
    A. 2
    Explanation
    The Li+ atom is a positively charged ion, indicating that it has lost one electron. Since a neutral lithium atom has 3 electrons, the Li+ ion will have 2 electrons remaining after losing one.

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  • 13. 

    How many protons, neutrons and electrons does Be2+ have?

    • 4,3,2

    • 4,3,4

    • 4,3,6

    • 4,4,2

    Correct Answer
    A. 4,3,2
    Explanation
    Beryllium (Be) has an atomic number of 4, which means it has 4 protons. The Be2+ ion indicates that it has lost 2 electrons, resulting in a charge of +2. Since protons and electrons have the same magnitude of charge but opposite signs, the number of electrons is 2 less than the number of protons, giving us 2 electrons. The number of neutrons in an atom or ion can be calculated by subtracting the atomic number from the mass number. However, the question does not provide the mass number, so the number of neutrons cannot be determined. Therefore, the correct answer is 4,3,2.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 01, 2010
    Quiz Created by
    Khoocarolyn
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