Periodic Table

Front

What is the atomic number of chromium (Cr)?

Back

The atomic number of chromium (Cr) is 24.

Front

How many energy levels does chromium (Cr) have?

Back

Chromium (Cr) has 4 energy levels.

Front

What are noble gases?

Back

Noble gases are a group of inert gases in Group 18 of the periodic table, characterized by having 8 valence electrons.

Front

Which group of the periodic table contains the alkali metals?

Back

The alkali metals are found in Group 1 of the periodic table.

Front

What is the charge of a nonmetal anion?

Back

Nonmetal anions typically have a negative charge, often -2 or -3.

Front

What is the charge of a metal cation?

Back

Metal cations typically have a positive charge, often +1 or +2.

Front

Which element is found in group 2, period 6?

Back

Barium (Ba) is found in group 2, period 6.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is the difference between a metal and a nonmetal?

Back

Metals are typically good conductors of heat and electricity, while nonmetals are poor conductors and can be gases or brittle solids.