Periodic Trends

Which element in period 4 has the highest electronegativity?

• potassium

• calcium

• copper

• bromine

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Which group 4A element has the highest ionization energy?

• carbon

• tin

• silicon

• lead

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Which group 2A element has the largest ionic radius?

• magnesium

• calcium

• barium

• radium

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The atom with the largest atomic radius in Group 18 is - 

• Ar

• He

• Kr

• Rn

The atom with the largest atomic radius in Period 4 (row 4) is - 

• K

• Kr

• Fe

• Fe

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The element with the smallest ionization energy in Period 6 is - 

• Rn

• Cs

• Os

• Tm

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Of the halogens, which has the smallest radius?

• F

• Br

• He

• At

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

• Carbon (C)

• Neon (Ne)

• Antimony (Sb)

• Germanium (Ge)

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As you move across the periodic table from left to right, the atomic radius decreases.  This is because - 

• the number of protons increases, so attraction to electrons increases

• the number of energy levels increases

• the number of electrons increases

• the atomic mass increases

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