Ch.2 Quiz Review_CHM090

Which type of electromagnetic radiation has the highest energy per photon?

• Radio waves

• Infrared

• Visible light

• X-rays

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In the Bohr model of the atom, electrons are located:

• Randomly in the nucleus

• In specific orbits with defined energies

• Floating freely around the atom

• In continuous energy bands with no gaps

When an electron in a hydrogen atom moves from n=3 to n=2, what happens?

• A photon is absorbed

• A photon is emitted

• Energy is lost from the nucleus

• The atom becomes an ion

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Which orbital can hold a maximum of 10 electrons?

• s

• p

• d

• f

Which orbital shape is most relevant for oxygen’s valence electrons in respiration?

• s

• p

• d

• f

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NGSS.HS-PS1-1

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What is the shorthand electron configuration of calcium (Z = 20)?

• [Ne] 3s² 3p

• [Ar] 4s²

• [Kr] 4d¹

• [He] 2s² 2p

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NGSS.HS-PS1-1

Which element has the highest electronegativity?

• Sodium (Na)

• Fluorine (F)

• Oxygen (O)

• Carbon (C)

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Potassium is essential in maintaining nerve impulses. Which ion does it most commonly form?

• K⁺

• K²⁺

• K⁻

• K³⁺

Which of the following ions is isoelectronic with neon (Ne)?

• O²⁻

• F⁻

• Na⁺

• Mg²⁺

• All of the above

Tags

NGSS.HS-PS1-1

What does the Lewis dot symbol for Cl^⁻ show?

• 7 dots and a negative charge

• 8 dots and a negative charge

• No dots and a negative charge

• 6 dots and no charge

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NGSS.HS-PS1-1

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