NGSS Chem IS3T1: Periodic Trends

Ionization energy is...

• the energy required to add an electron to a specific atom
• how much energy it takes to remove an electron from an atom
• the energy required to shield the outer electrons from the nucleus
• a measure of the ability of an atom to attract electrons

Ionization energy is...

• the energy required to add an electron to a specific atom
• how much energy it takes to remove an electron from an atom
• the energy required to shield the outer electrons from the nucleus
• a measure of the ability of an atom to attract electrons

Which of the following will have a lower ionization energy than Scandium (Sc)?

• Helium (He)
• Titanium (Ti)
• Calcium (Ca)
• Magnesium (Mg)

Which of the following will have a higher ionization energy than arsenic (As)?

• Gallium (Ga)
• Neon (Ne)
• Antimony (Sb)
• Germanium (Ge)

Electronegativity is...

• how good an atom is at attracting electrons
• the ability of an atom to lose electrons
• the energy required to remove an electron from a specific atom
• how easy it is to make friends. 

As atoms of elements in group 16 are considered in order from top to bottom, the electronegativity of each successive element....

• decreases
• increases
• remains the same
• none of the above

What term is used to describe "A measure of the size of an atom"

• chemical reactivity
• atomic radius
• energy levels
• orbit

Which element in Period 2 has the greatest atomic radius?

• Be

• C

• Na

• Li

Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.

• decreases, increases 
• increases, increases
• increases, decreases 
• stays the same, increases

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers