Regents 4.5- HW Ionization Energy

Which element has the greater ionization energy?

• Lead
• Silicon

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NGSS.HS-PS1-1

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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

Which of these elements has the lowest ionization energy?

• Oxygen (O)
• Boron (B)
• Carbon (C)
• Fluorine (F)

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NGSS.HS-PS1-1

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Ionization energy __________ as you go across a period

• has no pattern

• stays the same

• decreases

• increases

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NGSS.HS-PS1-1

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Ionization energy __________ as you go down a group.

Why are ions formed?

• To make our lives difficult
• Because atoms want 8 valence electrons
• Because atoms have the same number of protons and electrons
• Because atoms gained neutrons

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

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NGSS.MS-PS1-1

An atom becomes _______ when it loses electrons.

• Positive
• Negative
• Neutral
• Invinsible

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NGSS.HS-PS1-1

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What is a Rubidium ion's symbol?

• Rb^-
• Rb⁺
• Rb_^-2
• Rb⁺²

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NGSS.HS-PS1-1

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What is the ionic symbol for a phosphorus atom?

• P^-3
• P⁺³
• P^-2
• P⁺²