Trends of the Periodic Table

Fluorine, chlorine, bromine, and iodine all have the same number of valence electrons and have a tendency to gain electrons. Which element has the greatest ionization energy and electronegativity?

• fluorine

• chlorine 

• bromine 

• iodine 

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

The ionization potential of an element is the amount of energy required to remove an electron from an isolated atom or molecule. According to the periodic table, which of the following indicates the correct decreasing order of ionization energy?

• Li > Na > K > Cs

• Na > K > Li > Cs

• Li > K > Na > Cs 

• Cs > K > Na > Li 

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NGSS.HS-PS1-1

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All elements found on the left side of the Periodic Table of the Elements have what properties in common?

• They conduct heat and electricity 

• They are all gases 

• They are brittle and dull

• They are radioactive

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Which of these elements has an electron structure most similar to that of element X?

• 1

• 2

• 3

• 4

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NGSS.HS-PS1-1

Based on their locations in the periodic table, which element has chemical properties most similar to those of calcium, Ca?

• beryllium, Be

• potassium, K

• titanium, Ti

• yttrium, Y

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NGSS.HS-PS1-1

The number of valence electrons in an element affects the reactivity of that element. Which element listed has the fewest valence electrons?

• beryllium (Be)

• sodium (Na) 

• oxygen (O) 

• neon (Ne)

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NGSS.HS-PS1-1

According to the Periodic Table of the Elements, which set of elements has similar properties?

• H, C, I

• He, H, Al

• He, Ne, Ar

• Na, Ca, Al

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What is the family name of this group of elements? 

• Alkali metals 

• Halogens 

• Noble Gases 

• Alkali Earth Metals 

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

• Helium (He)

• Titanium (Ti)

• Calcium (Ca)

• Magnesium (Mg)

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NGSS.HS-PS1-1

Which atom has the largest atomic radius?

• potassium

• rubidium 

• francium

• cesium