Quiz 4.3 – Atomic Number and Mass Number

Which element is most likely to form an ion with a +2 charge?

Sodium

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Magnesium

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Fluorine

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Chlorine

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What is the common characteristic of elements in the same group of the periodic table?

Same atomic number

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Same number of valence electrons

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Same number of neutrons

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Same atomic mass

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What determines the size of an atom?

Number of protons

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Number of neutrons

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Distance of the outermost electrons from the nucleus

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Atomic mass

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Which of the following statements is true about ions?

Cations have more electrons than protons

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Anions have more protons than electrons

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Cations are positively charged

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Ions are always neutral

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The atomic mass of an element is usually closest to the mass number of its:

Most stable isotope

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Lightest isotope

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Heaviest isotope

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Ionized form

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Which of the following describes the relative mass of an electron compared to a proton?

Equal to the proton

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Much larger than the proton

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Much smaller than the proton

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Zero

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Which subatomic particle determines the identity of an element?

Proton

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Neutron

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Electron

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Photon

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What is the term for the energy required to remove an electron from an atom in the gas phase?

Electronegativity

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Ionization energy

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Electron affinity

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Atomic radius

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What is the term for atoms of the same element with different mass numbers?

Ions

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Isotopes

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Molecules

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Compounds

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Isotopes of an element have the same number of protons but different numbers of:

Neutrons

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Electrons

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Photons

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Quarks

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Quiz 4.3 – Atomic Number and Mass Number

Quiz 4.3 – Atomic Number and Mass Number

Stephen September 5, 2024

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