Electrons & the Periodic Table Review

Front

What does an atom's group number (column) help us determine?

Back

The number of valence electrons.

Front

Which block of the periodic table does sodium (Na) belong to?

Back

s-block.

Front

What element is represented in this Bohr model? (If the model shows 3 electrons in the first shell and 1 in the second)

Back

Lithium.

Front

Is this a correct dot diagram for neon (Ne)? (If the diagram shows 8 dots around the symbol)

Back

False.

Front

Which Bohr model represents neon? (If the model shows 10 electrons total)

Back

The model with 2 electrons in the first shell and 8 in the second.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the significance of valence electrons?

Back

They determine an atom's chemical properties and reactivity.

Front

How many valence electrons does oxygen (O) have?

Back

6 valence electrons.

Front

What is the general trend of electronegativity in the periodic table?

Back

Electronegativity increases across a period and decreases down a group.

Front

What is the difference between metals and nonmetals in the periodic table?

Back

Metals are typically good conductors of heat and electricity, while nonmetals are poor conductors.