Periodic Table Test Review 25-26

Front

Which group of elements has the lowest ionization energies?

Back

Alkali Metals (Group 1)

Front

In the modern periodic table, elements are arranged by:

Back

atomic number

Front

Why does Francium (Fr) have the lowest ionization energy in Group 1?

Back

Its 1 valence electron is very far from the nucleus, so little energy is needed to remove it.

Front

What are the horizontal rows in the periodic table called?

Back

Periods

Front

What is electronegativity?

Back

A measure of the tendency of an atom to attract a bonding pair of electrons when in a compound.

Front

What is the primary characteristic of Alkali Metals?

Back

They have one valence electron and are highly reactive.

Front

What is the significance of atomic number in the periodic table?

Back

It determines the element's position and its chemical properties.

Front

What are groups in the periodic table?

Back

Vertical columns that contain elements with similar chemical properties.

Front

What trend is observed in ionization energy across a period?

Back

Ionization energy generally increases from left to right across a period.

Front

What trend is observed in atomic radius down a group?

Back

Atomic radius increases as you move down a group.