Periodic Trends Part 1 Review

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

How many valence electrons does phosphorus have?

Back

Phosphorus has five valence electrons.

Front

What is the electron configuration for chlorine (Cl)?

Back

The electron configuration for chlorine is 1s² 2s² 2p⁶ 3s² 3p⁵.

Front

What does a full outer shell mean?

Back

A full outer shell means that the outermost energy level of an atom is filled with the maximum number of electrons, making the atom stable.

Front

Which element has a full outer shell in its ground state?

Back

Neon has a full outer shell in its ground state.

Front

What is the electron configuration for Mg2+ ions?

Back

The electron configuration for Mg2+ ions is 1s² 2s² 2p⁶.

Front

What is a Lewis electron-dot structure?

Back

A Lewis electron-dot structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.

Front

How many electrons can the outer shell hold?

Back

The outer shell can hold a maximum of 8 electrons, following the octet rule.

Front

What is the significance of the periodic table in understanding periodic trends?

Back

The periodic table organizes elements based on their atomic number and electron configuration, helping to identify trends in properties such as electronegativity, ionization energy, and atomic radius.

Front

What is electronegativity?

Back

Electronegativity is the tendency of an atom to attract electrons in a chemical bond.