Chem: Fall Final Exam REVIEW 2024

Front

What are core electrons?

Back

Core electrons are the electrons in an atom that are not involved in chemical bonding and are located in the inner shells of the atom.

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 do you determine the number of core and valence electrons in an atom?

Back

The number of core electrons can be found by subtracting the number of valence electrons from the total number of electrons in the atom.

Front

What is electronegativity?

Back

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

Front

Why do noble gases have zero electronegativity?

Back

Noble gases have zero electronegativity because they already have full valence shells, making them stable and unlikely to attract additional electrons.

Front

What is the significance of a full valence shell?

Back

A full valence shell indicates that an atom is stable and less likely to react with other atoms.

Front

How many core and valence electrons does an atom with 11 electrons have if it has 1 valence electron?

Back

It has 10 core electrons and 1 valence electron.

Front

If an atom has 10 core electrons and 5 valence electrons, how many total electrons does it have?

Back

It has a total of 15 electrons.

Front

What is the electron configuration of an atom with 8 valence electrons?

Back

The electron configuration would end in 's2p6', indicating a full outer shell.

Front

How many core electrons does an atom with 18 total electrons and 8 valence electrons have?

Back

It has 10 core electrons.