Quiz on Atomic Structure

All atoms are

• positively charged, with the number of protons exceeding the number of electrons

• negatively charged, with the number of electrons exceeding the number of protons

• neutral, with the number of protons equaling the number of electrons

• neutral, with the number of protons equaling the number of electrons, which is equal to the number of neutrons

The particles that are found in the nucleus of an atom are

• neutrons and electrons

• electrons only

• protons and neutrons

• protons and electrons

An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are

• 152 protons and 76 electrons

• 76 protons and 0 electrons

• 38 protons and 38 electrons

• 76 protons and 76 electrons

All atoms of the same element have the same

• number of neutrons

• number of protons

• mass numbers

• mass

What atom has the ground state electron configuration of 1s²2s²2p⁶3s²3p⁴?

• Magnesium, Mg

• Nitrogen, N

• Oxygen, O

• Sulfur, S

The modern periodic table is arranged in order of increasing atomic

• Mass

• Charge

• Number

• Radius

Which of the following electron configurations is most likely to result in an element that is relatively inactive/inert?

• a half-filled energy sublevel

• a filled energy sublevel

• one empty and one filled energy sublevel

• a filled highest energy level

Which subatomic particle plays the greatest part in determining the properties of an element?

• Proton

• Neutron

• Electron

• Nucleus

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

• Transition metals

• Metalloids

• Nonmetals

• Metals

An ionic compound is (choose all that apply)

• Electrically neutral

• Held together by ionic bonds

• Composed of cations and anions