CrossChemACP2024FinalReview

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

Why do elements in the same group have similar properties?

Back

Elements in the same group have similar properties because they have the same number of valence electrons.

Front

What is the significance of ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom. It indicates how easily an atom can lose an electron.

Front

How does atomic mass relate to isotopes?

Back

The average atomic mass of an element is calculated based on the masses of its isotopes and their relative abundances.

Front

What is the periodic trend for ionization energy?

Back

Ionization energy generally increases across a period and decreases down a group in the periodic table.

Front

What is an electron configuration?

Back

An electron configuration is the distribution of electrons among the various orbitals of an atom.

Front

How do you determine the element from its electron configuration?

Back

You can determine the element by counting the total number of electrons, which equals the atomic number.

Front

What is the relationship between atomic number and protons?

Back

The atomic number of an element is equal to the number of protons in its nucleus.

Front

What is the role of core electrons?

Back

Core electrons are the inner electrons that are not involved in bonding and shield the valence electrons from the nucleus.

Front

What is a period in the periodic table?

Back

A period is a horizontal row in the periodic table, indicating elements with the same number of electron shells.