Which of the following is NOT true about a phosphorus ion?

It has a -3 charge to meet the octet rule.

It is larger than a neutral phosphorus atom.

It has more electrons than a neutral chlorine atom.

Which is not true of alkali metals?

Smaller ionic radius than atomic radius

Which is not true of atomic radius?

Larger going across from left to right due to increasing nuclear charge.

Larger going down due to added energy levels expanding the size of the atom.

Noble gases have the smallest atomic radius due to highest number of protons in each period.

Strontium atoms are larger than iodine atoms because iodine has more protons.

Which is not true of ionic radius?

Nitrogen ions are smaller than neutral nitrogen atoms.

Nonmetals become larger as ions.

When metals form an ion, they lose an energy level.

Why does fluorine have a higher ionization energy than iodine?

The outer electrons are farther away from the nucleus in an iodine atom, so the attraction is lower.

There are more electrons in the inner shells of a fluorine atom, so the outer electrons are shielded from the nuclear charge.

Actually, iodine has a higher ionization energy than fluorine because it has a higher atomic number.

Iodine has more valence electrons than fluorine.

Fluorine has 7 valence electrons, 2 energy levels, and 9 protons. Which of the following is NOT true?

Fluorine needs one more electron to fill the octet rule, so it will gain an electron and form a +1 ion.

Fluorine's outer shell is closer to the nucleus than chlorine's, so the nuclear charge is more attractive to new electrons.

Fluorine has more protons than oxygen but the same number of shells, so the nuclear charge is more attractive to new electrons.

Fluorine needs one more electron to fill the octet rule, but sodium has one too many, so electrons are more likely to join fluorine.

Which is not true of Helium?

It is a larger atom than hydrogen.

Periodic Trends

Chemistry

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MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The tendency of an atom to attract electrons is called...

ionization energy

electronegativity

atomic radius

ionic radius

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Ionization energy is the amount of energy required to remove the electron that is closest to the nucleus.

True

False

An atom with more electrons than protons is called...

cation

anion

neutral

shielded

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Why is this statement untrue? A cation has a positive charge because it has gained electrons.

Cations are negative.

This would describe anions.

A cation's positive charge is due to lost electrons.

The statement is actually true.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How is atomic radius actually determined?

A measurement of distance from nucleus to outermost electron.

Half of the measured distance between the nuclei of two atoms of the same element.

Calculation based on the number of energy levels an atom has.

Half of the diameter of the nucleus.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following elements would be smaller as an ion than as a neutral atom?

Fluorine

Phosphorus

Iodine

Aluminum

Which of the following would have a larger ionic radius than atomic radius?

Aluminum

Calcium

Zinc

Oxygen

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Periodic Trends

The tendency of an atom to attract electrons is called...

Ionization energy is the amount of energy required to remove the electron that is closest to the nucleus.

An atom with more electrons than protons is called...

Why is this statement untrue? A cation has a positive charge because it has gained electrons.

How is atomic radius actually determined?

Which of the following elements would be smaller as an ion than as a neutral atom?

Which of the following would have a larger ionic radius than atomic radius?

Which of the following elements are in order from lowest electronegativity to highest?

Which of the following trends would be higher for noble gases than for alkali metals?

Which of the following would be higher for alkali metals than for halogens?

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