Elements and the Periodic Table Review

An atom is considered an ion if it has extra: 

• Protons
• Neutrons
• Electrons
• Orbitals

An atom is considered an isotope if it has extra: 

• Protons
• Neutrons
• Electrons
• Orbitals

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Valence electrons are: 

• Electrons located in the outermost orbital 
• Electrons located in the innermost orbital
• Electrons that are bonded to another atom
• Electrons that in the second orbital

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Carbon has an atomic number of 6. If an isotope of Carbon has a mass of 14, how many neutrons does it have?

• 20
• 7
• 6
• 8

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A neutral atom would become an ion that has a charge of +2 by 

• Losing two protons
• Losing two neutrons
• Losing two electrons

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

Which statement correctly and completely identifies a trend in the periodic table?

• 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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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. 

As you look from left to right across a period, electronegativity

• increases

• decreases

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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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