Periodic Trends

Question 1

Describe the trends in atomic radii by checking the correct box. Atomic radii from the left to right across a period tend to:

Revolt · Accepted Answer

decrease.

Question 2

Atomic radii from the top to the bottom of a group tend to:

Revolt · Accepted Answer

increase.

Question 3

Br < ClI Se

Revolt · Accepted Answer

Cl

Question 4

Check the correct box to describe the periodic trends in electronegativity.Electronegativity across a period:

Revolt · Accepted Answer

increases.

Question 5

Electronegativity down a group:

Revolt · Accepted Answer

decreases.

Question 6

What is the predicted order of first ionization energies from highest to lowest for beryllium, calcium, magnesium, and strontium?

Revolt · Accepted Answer

Be > Mg > Ca > Sr

Question 7

What is the predicted order of first ionization energies from highest to lowest for aluminum, phosphorus, silicon, and sulfur?

Revolt · Accepted Answer

P > S > Si > Al

Question 8

Why are the trends and exceptions to the trends in ionization energy observed? Check all that apply.

Revolt · Accepted Answer

Ionization energy tends to increase across a period because the nuclear charge increases.; Ionization energy tends to increase across a period because electrons are added to the same main energy level.; The ionization energies of elements in Group 13 tend to be lower than the elements in Group 2 because the full s orbital shields the electron in the p orbital from the nucleus.

Question 9

Use the periodic table to select the element from the drop-down menu that has the correct relative electronegativity.Mg > Be AlCa

Revolt · Accepted Answer

Ca

Question 10

P > As NS

Revolt · Accepted Answer

As

Periodic Trends Answers

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