1 Periodicity Quiz

Which property generally decreases across period 3?

• Atomic number

• Electronegativity

• Atomic radius

• First ionization energy

• All of them

Which property increases down group 1?

A. First ionization energy

B. Melting point

C. Reactivity

D. Electronegativity

• A

• B

• C

• D

• All of them

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Which pair of elements has the greatest difference in electronegativity?

A. Cs and F

B. Cs and Cl

C. Cs and Br

D. Cs and I

• A

• B

• C

• D

• All of them

Which statements about the periodic table are correct?

I. Elements in period 3 have similar chemical properties.

II. Elements in group 7 show a gradual change in physical properties.

III. The position of an element in period 3 is related to the number of electrons in the highest occupied energy level.

• A. I and II only

• B. I and III only

• C. II and III only

• D. I, II and III

• All of them

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As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.
• The atoms have more protons.
• The atoms have more energy levels
• The atoms have more nuetrons

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. 

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List the following in order of weakest to strongest ionization energy.
P, Cs, Co, Sr

• P, Co, Sr, Cs
• Cs, Sr, Co, P
• Sr, Cs, Co, P
• P, Co, Cs, Sr

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Which of the following elements has the smallest atomic radius?

• Sulfur

• Chlorine

• Aluminum

• Sodium

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Which atom has the largest atomic radius?

• potassium

• rubidium

• francium

• cesium

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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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