Unit 5 Periodic Law Review

Front

What is the size comparison between a hydride ion and a hydrogen atom?

Back

The hydride ion is larger than a hydrogen atom.

Front

Which element has the lowest electronegativity with a Pauling unit of 0.79?

Back

Cesium.

Front

Which group of elements rarely participates in chemical reactions?

Back

Noble gases.

Front

What type of element is silicon?

Back

Silicon is a metalloid.

Front

Identify a transition metal from the following options: Sulfur, Bromine, Helium, Copper, Radium.

Back

Copper.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

Define noble gases and provide an example.

Back

Noble gases are elements in group 18 of the periodic table that are characterized by their lack of reactivity. Example: Helium.

Front

What distinguishes transition metals from other metals?

Back

Transition metals can form variable oxidation states and have incomplete d subshells.

Front

What is the significance of the periodic law?

Back

The periodic law states that the properties of elements are a periodic function of their atomic numbers.

Front

Explain what metalloids are.

Back

Metalloids are elements that have properties intermediate between metals and nonmetals.