Understanding Electron Configuration

What is an electron shell?

• A type of chemical bond between atoms.

• A shell that protects the nucleus from radiation.

• An electron shell is a region around an atom's nucleus where electrons are likely to be found.

• A layer of protons surrounding the nucleus.

How many electron shells can an atom have?

• Only 1 electron shell.

• Up to 7 electron shells.

• Up to 10 electron shells.

• Up to 5 electron shells.

What is the maximum number of electrons in the first shell?

• 2

• 4

• 1

• 8

What are valence electrons?

• Electrons that are always found in the nucleus of an atom.

• Electrons that are responsible for the mass of an atom.

• Electrons that are involved in the formation of isotopes.

• Valence electrons are the electrons in the outermost shell of an atom that participate in chemical bonding.

Why are valence electrons important in chemical bonding?

• Valence electrons are the same as core electrons.

• Valence electrons are important in chemical bonding because they determine how atoms interact and bond with each other.

• Valence electrons only exist in noble gases.

• Valence electrons are irrelevant to chemical reactions.

How do you determine the number of valence electrons in an element?

• The number of valence electrons is the same for all elements in the periodic table.

• Valence electrons can be calculated using the element's electron affinity.

• The number of valence electrons is determined by the atomic mass of the element.

• The number of valence electrons is determined by the group number of the element in the periodic table.

What is the electron configuration of oxygen?

• 1s² 2s² 2p²

• 1s² 2s² 2p⁴

• 1s² 2s² 2p³

• 1s² 2s² 2p⁶

What is the significance of the outermost electron shell?

• The outermost electron shell is significant because it determines an atom's chemical properties and reactivity.

• It determines the atom's physical state.

• It only affects the atom's mass.

• It has no impact on an atom's behavior.

How do electron shells relate to the periodic table?

• The periodic table is arranged by atomic mass only.

• Electron shells have no impact on chemical properties.

• Electron shells determine the arrangement of elements in the periodic table based on their electron configurations.

• Electron shells are irrelevant to the periodic table.

What are the four types of quantum numbers?

• Frequency quantum number

• Wavelength quantum number

• Energy quantum number

• Principal quantum number, Angular momentum quantum number, Magnetic quantum number, Spin quantum number