TEK 5C Periodic Trends

Which of the following will have a larger radius than Zinc (Zn)?

• Gallium (Ga)

• Aluminum (Al)

• Magnesium (Mg)

• Strontium (Sr)

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112.43.c.5.C

Which atom has the largest atomic radius?

• potassium (K)

• rubidium (Rb)

• francium (Fr)

• cesium (Cs)

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112.43.c.5.C

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

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112.43.c.5.C

As you move across the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.
• the atoms have less mass
• the atoms have more protons.
• the atoms have less electrons.

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112.43.c.5.C

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

• Ar
• He
• Kr
• Rn

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Which statement correctly and completely identifies a trend?

• Atomic radius decreases across a period and increases down a group.

• Electronegativity decreases across a period and decreases down a group.

• Ionization energy increases across a period and increases down a group.

• Ionic radius increases across a period and increases down a group.

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Which periodic group has the smallest atomic radius?

• Alkali metals
• Halogens
• Noble Gases
• Transition metals

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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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What is ionization energy?

• Energy needed to destroy an atom
• Energy required to remove an electron
• Energy needed to split an electron
• Energy required to add an electron

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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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112.43.c.5.C