Chemistry Exam #6 Review Periodic Trends and Ionic Bonding

The radius of an atom can only be found by?

• Asking the atom nicely
• Measuring the distance between the nuclei of two touching atoms and halving the distance.

• Measuring the weight of the atom
• Guessing based on the atom's color

Which atom has the largest atomic radius?

• potassium

• rubidium

• francium

• cesium

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Atomic radius generally increases as we move __________.  

• down a group and from right to left across a period 
• up a group and from left to right across a period 
• down a group and from left to right across a period 
• up a group and from right to left across a period 

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Which element has the smallest atomic radius?

• Francium

• Fluorine

• Neon

• Helium

Order the following in increasing atomic radii: 
Ra, Be, Ca, Rb, H

• Ra, Be, Rb, H, Ca
• Rb, H, Ca, Be, Ra
• Ra, Rb, Ca, Be, H
• H, Be, Ca, Rb, Ra

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Put these elements in order of INCREASING atomic radius.

Li, O, C, F

• O, C, F, Li

• F, O, C, Li

• Li, C, O, F

• C, F, Li, O

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What is the trend for ionization energy?

• Across a period (left to right) it increases and up a group it increases.

• Across a period (left to right) it decreases and up a group it increases.

• Across a period (left to right) it decreases and down a group it decreases.

• Across a period (left to right) it increases and down a group it increases.

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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

Put the following in order of increasing ionization energy: Sodium (Na), Oxygen (O), Boron (B)

• Sodium, Boron, Oxygen
• Oxygen, Boron, Sodium
• Sodium, Oxygen, Boron
• Oxygen, Sodium, Boron

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Put the following in order of increasing ionization energy:Neon (Ne), Lithium (Li), Carbon (C)

• Lithium, Carbon, Neon
• Carbon, Lithium, Neon
• Neon, Carbon, Lithium
• Lithium, Neon, Carbon

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