Honors Periodic Table (Topic 3)

What is the total number of valence electrons for any halogen atom?

• 1

• 2

• 7

• 8

Which particle determines the chemical activity (or reactivity) of an element?

• electron

• proton

• neutron

• alpha particle

Calcium forms an ion with a charge of,

• 6- by gaining six electrons

  
  

• 2+ by gaining two electrons

• 6- by losing six electrons

  
  

• 2+ by losing two electrons

  
  

The amount of energy required to remove the most loosely bound electron from an atom is called,

• electronegativity

• ionization energy

• kinetic energy

• electron affinity

Which particle has the largest radius?

• Mg

• S

• Mg²⁺

• S^2-

This term measures the energy released (or sometimes gained) by an atom when it gains an electron and becomes an anion.

• ionization energy

• electron affinity

• ionic radius

• electronegativity

Which is an arbitrary scale and thus, has no units?

• electronegativity

• electron affinity

• ionization energy

• radius

Which of the following would have the lowest electronegativity?

• Fe

• K

• Ne

• O

Which of the following would have the smallest ionic radius?

• Na⁺

• K⁺

• Mg²⁺

• Ca²⁺

Which of the following choices has the most loosely bound outer electron?

• He

• As

• Xe

• Cs