Electron Behavior and Arrangement Quiz

What is the charge of an ion that has gained two electrons?

• +2

• -2

• +1

• -1

What is the electron configuration of a neutral tin (Sn) atom?

• [Kr] 5s² 4d¹⁰ 5p²

• [Kr] 5s² 4d¹⁰

• [Kr] 4d¹⁰

• [Kr] 5s² 5p²

Tags

NGSS.HS-PS1-1

What is the electron configuration of a bromine atom?

• [Ar] 4s² 3d¹⁰ 4p⁵

• [Ar] 4s² 3d¹⁰ 4p⁶

• [Ar] 4s² 3d¹⁰ 4p⁴

• [Ar] 4s² 3d¹⁰ 4p³

Tags

NGSS.HS-PS1-1

Which of the following is true about valence electrons?

• They are involved in chemical bonding

• They are located in the nucleus

• They are always in the d orbitals

• They are never exchanged or shared

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the electron configuration of Bromine's valence electrons?

• 4s² 4p⁵

• [Ar] 3d¹⁰

• 3d¹⁰ 4s²

• [Ar] 4p⁵

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

For elements in groups 1A – VIIIA, the number of valence electrons equals (a)  

• The atomic number
• The group number
• The period number
• The mass number

Tags

NGSS.HS-PS1-1

Match the following orbitals with the requirement for writing out the electron configuration instead of using the group number for valence electrons.

• Elements that typically have a filled or half-filled subshell

• Elements in the f-orbital

• Lanthanides and actinides with complex electron configurations

• Elements in the d-orbital

• Elements that follow the octet rule

• Elements in the p-orbital

• Transition metals with variable oxidation states

• Elements in the s-orbital

Atoms become ions to (a)  

• To gain more protons
• To lose neutrons
• To achieve a full valence shell
• To change their atomic number

What is the significance of having a full valence shell?

• It makes the atom unstable

• It increases the atom's reactivity

• It provides stability and low energy

• It changes the atom's color

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In a Lewis Electron Dot Diagram, what element is represented with 5 valence electrons?

• Oxygen

• Nitrogen

• Carbon

• Hydrogen