Exploring Electron Configurations

What is the electron configuration of oxygen?

• 1s² 2s² 2p²

• 1s² 2s² 2p⁵

• 1s² 2s² 2p³

• 1s² 2s² 2p⁴

How many electrons can the s orbital hold?

• 2

• 8

• 1

• 10

What is the general trend of atomic radius across a period?

• The atomic radius remains constant across a period.

• The atomic radius fluctuates randomly across a period.

• The atomic radius decreases across a period.

• The atomic radius increases across a period.

Define ionization energy and its trend in the periodic table.

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

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

• Ionization energy is highest for noble gases and lowest for alkali metals in the periodic table.

• Ionization energy remains constant across a period and down a group in the periodic table.

What are valence electrons and why are they important?

• Valence electrons are the protons in an atom that determine its mass.

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

• Valence electrons are the inner electrons that do not participate in any reactions.

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

How does electronegativity change down a group in the periodic table?

• Electronegativity increases down a group.

• Electronegativity decreases down a group.

• Electronegativity remains constant down a group.

• Electronegativity fluctuates randomly down a group.

What is the electron configuration for a sodium ion (Na+)?

• 1s² 2s² 2p⁶

• 1s² 2s² 3p⁶

• 1s² 2s² 2p⁶ 3s¹

• 1s² 2s² 2p⁵

Describe the shape of the p orbital.

• The p orbital has a triangular shape.

• The p orbital is flat like a sheet of paper.

• The p orbital is spherical in shape.

• The p orbital has a dumbbell shape.

Which element has the highest electronegativity?

• Oxygen

• Fluorine

• Carbon

• Nitrogen

What is the significance of the octet rule in chemical bonding?

• The octet rule is only applicable to noble gases.

• The octet rule states that atoms can only bond with metals.

• The octet rule is significant because it helps predict chemical bonding behavior and stability of atoms in molecules.

• The octet rule explains the color of chemical compounds.