Valence Electrons Quiz

Orbitals and Electron Configuration

• The orbital shape that can hold the most electrons is the s orbital, which can hold a maximum of 2 electrons.
• The energy level that can hold the most electrons is the third energy level, which can hold a maximum of 18 electrons.

Electron Configuration

• Elements in group 12 have an electron configuration that ends in d10.
• A fluorine atom has an electron configuration of 1s² 2s² 2p⁵.
• A cerium atom has a total of 58 electrons.
• An iron atom has an electron configuration of 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶ 4s².

Valence Electrons

• Elements in group 1 have 1 valence electron.
• Elements in group 17 have 7 valence electrons.
• Valence electrons are the outermost electrons of an atom that participate in chemical bonding.
• The number and arrangement of valence electrons determine the chemical properties of an element.

Energy Levels

• The energy level of an electron is notated using the format n, where n is the energy level number.

Orbital Shape

• The shape of an orbital is not always spherical.
• Not all neutral atoms have the same number of valence electrons.