Chemistry Semester 2 Cumulative Test

Orbital

• a region in an atom where there is a high probability of finding electrons.

• an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties.

• The energy level at which electrons orbit the nucleus of an atom

• a subdivision of electron shells

Valence Electron

• a region in an atom where there is a high probability of finding electrons.

• an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties.

• The energy level at which electrons orbit the nucleus of an atom

• a subdivision of electron shells

Electron Shell

• a region in an atom where there is a high probability of finding electrons.

• an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties.

• The energy level at which electrons orbit the nucleus of an atom

• a subdivision of electron shells

Electron Subshell

• a region in an atom where there is a high probability of finding electrons.

• an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties.

• The energy level at which electrons orbit the nucleus of an atom

• a subdivision of electron shells

What is the maximum number of electrons that an orbital can have?

• 1 electron
• 2 electrons
• 3 electrons
• 4 electrons

How many valence electrons are represented here?

• 7
• 5
• 2
• 8

How many d orbitals are there in a given sublevel?

• 1
• 3
• 5
• 7

How many p orbitals are there in a sublevel?

• 2
• 1
• 4
• 3

How many valence electrons does Chlorine have?

• 5
• 2
• 7
• 5

What is this element? 
1s²2s²2p⁶3s²3p⁶
4s²3d¹⁰4p⁶

• Argon
• Krypton
• Selenium
• Bromide