Atomic Structure CheckPoint Review

Which two atoms have the same mass?

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How many valence electrons are in the following atom:

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Iron is considered a....

• nonmetal

• metalloid

• representative metal

• transition metal

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Identify the element based on the orbital diagram below:

• Sodium

• Phosphorus

• Scandium

• Argon

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In the image below, 15.999 refers to the element's

• Oxygen

• Atomic mass

• Mass number

• Atomic number

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According to the Quantum Mechanical Model, electrons are found in

• rings

• orbitals

• lines

• the nucleus

Which subatomic particle has a charge of -1?

• Proton

• Neutron

• Positron

• Electron

Which of the following is true about the electron configurations of the noble gases?

• The highest occupied s and p sublevels are completely filled.

• The highest occupied s and p sublevels are partially filled.

• The electrons with the highest energy are in a d sublevel.

• The electrons with the highest energy are in an f sublevel.

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When an electron moves from a lower to a higher energy level, the electron

• always doubles its energy.

• absorbs a continuously variable amount of energy.

• absorbs a quantum of energy.

• moves closer to the nucleus.

Elements in Group 17/VII are known as:

• Halogens

• Noble Gases

• Alkaline Earth Metals

• Alkali Metals