Atomic Structure and Properties Quiz
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Questions and Answers

Match each item with the correct statement below:

proton = a positively charged subatomic particle nucleus = the central part of an atom, containing protons and neutrons atom = the smallest particle of an element that retains the properties of that element electron = a negatively charged subatomic particle neutron = a subatomic particle with no charge

The sum of the protons and neutrons in an atom equals the _____.

  • atomic mass
  • atomic number
  • mass number (correct)
  • nucleus number
  • All atoms of the same element have the same ______.

  • mass
  • number of protons (correct)
  • mass numbers
  • number of neutrons
  • Isotopes of the same element have different ______.

    <p>numbers of neutrons.</p> Signup and view all the answers

    The mass number of an element is equal to ______.

    <p>the total number of protons and neutrons in the nucleus</p> Signup and view all the answers

    How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain?

    <p>50 protons, 50 electrons, 75 neutrons</p> Signup and view all the answers

    If E is the symbol for an element, which two of the following symbols represent isotopes of the same element?

    20

    1. 10 E

    20 2. 11E

    21 3. E

    21 4. 10 E

    <p>1 and 2</p> Signup and view all the answers

    In which of the following is the number of neutrons correctly represented?

    <p>238 92 U has 146 neutrons.</p> Signup and view all the answers

    How do the isotopes hydrogen-1 and hydrogen-2 differ?

    <p>Hydrogen-2 has one neutron; hydrogen-1 has none.</p> Signup and view all the answers

    The atomic mass of an element depends upon the ______.

    <p>mass and relative abundance of each isotope of that element.</p> Signup and view all the answers

    How does the energy of an electron change when the electron moves closer to the nucleus?

    <p>It decreases.</p> Signup and view all the answers

    The principal quantum number indicates what property of an electron?

    <p>energy level</p> Signup and view all the answers

    What is the shape of the 3p atomic orbital?

    <p>dumbbell</p> Signup and view all the answers

    According to the aufbau principle, ______.

    <p>electrons enter orbitals of lowest energy first.</p> Signup and view all the answers

    What is another name for the transition metals?

    <p>Group B elements</p> Signup and view all the answers

    Each period in the periodic table corresponds to a(n) ______.

    <p>principal energy level</p> Signup and view all the answers

    The modern periodic table is arranged in order of increasing atomic ______.

    <p>number</p> Signup and view all the answers

    Which of the following categories includes the majority of the elements?

    <p>nonmetals</p> Signup and view all the answers

    To what category of elements does an element belong if it is a poor conductor of electricity?

    <p>metalloids</p> Signup and view all the answers

    Elements that are characterized by the filling of p orbitals are classified as ______.

    <p>groups 3A through 8A</p> Signup and view all the answers

    Of the elements Fe, Hg, U, and Te, which is a representative element?

    <p>Te</p> Signup and view all the answers

    How does atomic radius change from top to bottom in a group in the periodic table?

    <p>It tends to increase.</p> Signup and view all the answers

    Which of the following factors contributes to the increase in atomic size within a group in the periodic table as the atomic number increases?

    <p>more shielding of the electrons in the highest occupied energy level</p> Signup and view all the answers

    Which of the following statements is true about ions?

    <p>Cations form when an atom loses electrons.</p> Signup and view all the answers

    What is the energy required to remove an electron from an atom in the gaseous state called?

    <p>ionization energy</p> Signup and view all the answers

    Compared with the electronegativities of the elements on the left side of a period, the electronegativities of the elements on the right side of the same period tend to be ______.

    <p>higher</p> Signup and view all the answers

    How many valence electrons are in an atom of phosphorus?

    <p>5</p> Signup and view all the answers

    Which of the following elements forms an ion with a 1- charge?

    <p>fluorine</p> Signup and view all the answers

    What is the formula of the ion formed when tin achieves a stable electron configuration?

    <p>Sn2-</p> Signup and view all the answers

    What is the charge on the cation in the ionic compound sodium sulfide?

    <p>1+</p> Signup and view all the answers

    What is the net charge of the ionic compound calcium fluoride??

    <p>0</p> Signup and view all the answers

    A compound composed of cations and anions is called a(n) ______.

    <p>ionic compound</p> Signup and view all the answers

    Which of the following is true about an ionic compound?

    <p>It is composed of anions and cations and yet it is electrically neutral.</p> Signup and view all the answers

    Ionic compounds are normally in which physical state at room temperature?

    <p>solid</p> Signup and view all the answers

    Which molecule has a single covalent bond?

    <p>CO</p> Signup and view all the answers

    The chemical formula of an ionic compound shows ______.

    <p>the lowest whole-number ratio between ions in the ionic compound.</p> Signup and view all the answers

    The side-by-side overlap of (p) orbitals produces what kind of bond?

    <p>pi bond</p> Signup and view all the answers

    Which of the following atoms acquires the most negative charge in a covalent bond with hydrogen?

    <p>O</p> Signup and view all the answers

    Which of the following covalent bonds is the most polar?

    <p>H-F</p> Signup and view all the answers

    If E is the symbol for an element, which two of the following symbols represent isotopes of the same element?

    <p>20/10 E and 21/10 E</p> Signup and view all the answers

    The electron configuration of a fluoride ion, F¯, is ______.

    <p>the same as that of a neon atom</p> Signup and view all the answers

    When placed between oppositely charged metal plates, the region of a water molecule attracted to the negative plate is the ______.

    <p>oxygen region of the molecule</p> Signup and view all the answers

    What type of ions have names ending in -ide?

    <p>only anions</p> Signup and view all the answers

    Which of the following determines that an element is a metal?

    <p>whether it loses valence electrons</p> Signup and view all the answers

    In which of the following are the symbol and name for both of the ions given correctly?

    <p>OH-: hydroxide; O2-: oxide</p> Signup and view all the answers

    Which of the following correctly provides the names and formulas of polyatomic ions?

    <p>chromate: CrO42-; dichromate: Cr2O72-</p> Signup and view all the answers

    Systematic names are preferred over common names because common names ______.

    <p>do not tell you the actual charge of the ion.</p> Signup and view all the answers

    What is the correct formula for potassium sulfite?

    <p>K2SO3</p> Signup and view all the answers

    Binary molecular compounds are made of two ______.

    <p>nonmetallic elements</p> Signup and view all the answers

    In naming a binary molecular compound, the number of atoms of each element present in the molecule is indicated by ______.

    <p>superscripts</p> Signup and view all the answers

    Which of the following is a binary molecular compound?

    <p>PCl5</p> Signup and view all the answers

    When naming acids, the prefix hydro- is used when the name of the acid anion ends in ______.

    <p>-ide</p> Signup and view all the answers

    When the name of an anion that is part of an acid ends in -ite, the acid name includes the suffix ______.

    <p>-ous</p> Signup and view all the answers

    Study Notes

    Matching

    • Protons are positively charged subatomic particles
    • Electrons are negatively charged subatomic particles
    • Neutrons have no charge
    • Atoms are the smallest particles of an element that retains the element's properties
    • Nuclei are the central part of an atom containing protons and neutrons

    Multiple Choice

    • The mass number is the sum of the protons and neutrons in an atom.
    • All atoms of the same element have the same number of protons.
    • Isotopes of the same element have a different number of neutrons.
    • The mass number equals the total number of protons and neutrons in the nucleus.
    • An atom with atomic number 50 and mass number 125 contains 50 protons, 50 electrons, and 75 neutrons.

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    Description

    Test your knowledge on atomic structure with this quiz focusing on protons, neutrons, and electrons. Answer questions about mass numbers, isotopes, and the characteristics of atoms. Ideal for students learning about fundamental chemistry concepts.

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