Chemistry Quiz 4 (Chapter 5)

Mendeleev predicted that the gaps in his periodic table represented

• ions.

• radioactive elements.

• unstable elements.

• undiscovered elements.

The person whose work led to a periodic table based on increasing atomic number was

• Moseley.

• Mendeleev.

• Rutherford.

• Cannizzaro.

The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic

• masses.

• numbers.

• radii.

• structures.

On most periodic tables, the lanthanides and actinides appear

• on a separate page.

• below the main portion.

• on the back.

• at the top.

An element that has the electron configuration [Ne]3s²3p⁵ is in Period

• 2

• 3

• 5

• 7

An element that has the electron configuration [Ne]3s²3p⁵ is in Group

• 2

• 5

• 7

• 17

Elements in the s and p blocks of the periodic table are called

• alloys.

• main-group elements.

• metals.

• transition metals.

An element found in groups 3–12 of the periodic table is classified as a(n)

• alkali metal.

• alloy.

• transition metal.

• actinide.

An electron that is in the highest energy level of an atom and determines the atom’s chemical properties is called a(n)

• valence electron.

• paired electron.

• extra electron.

• opposite-spin electron.

What can be removed from an atom if ionization energy is supplied?

• a proton

• a neutron

• an electron

• an ion