OnRamps Unit 1 Part 2 Review

In an atom, what would be the maximum number of electrons having the quantum numbers n = 6 and l = 2?

• 72

• 6

• 10

• 8

Which set of quantum numbers does NOT provide a satisfactory solution to the wave equation?

• n = 2, l = 0, m_l = -1

• n = 1, l = 0, m_l = 0

• n = 4, l = 2, m_l = +2

• n = 5, l = 3, m_l = -3

Fill in the blanks: potassium is one of the most well-known elements in the alkali metal ______. It is in the ______ which makes it a ______ element. Its single valence electron is in the ______ subshell of the ______ shell, making it very reactive. It reacts readily with non-metals to form ______.

• series; s block; common; l = 2; n = 4; networks

• row; d block; main group; l = 1; n = 4; salts

• family; s block; main group; l = 0; n = 4; salts

• row; d block; non-metal; l = 1; n = 3; alloys

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One of the following does NOT represent the ground state electron configuration for an atom. Which one?

• [Ne] 3s2 3p5

• [Ne] 3s1 3p3

• [Ne] 3s1

• [Ne] 3s2

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NGSS.HS-PS1-1

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Which of the following atoms has an s2p3 valence electron configuration?

• Ga

• Ge

• As

• Se

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How many electrons are in the 4s orbital of a Ca²⁺ ion?

• 0

• 2

• -2

• 3

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A comparison of the electron configurations of nickel (Ni) and copper (Cu) indicates that

• Cu has two more d electrons and one less s electron than Ni

• Cu has one more d electrons and one more s electron than Ni

• Cu has one more d electron and the same number of s electrons as Ni

• Cu has two more d electrons and the same number of s electrons as Ni

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Which of the following would be the correct electron configuration for divalent ruthenium, Ru(II)?

• [Kr] 4s² 4d⁴

• [Kr] 5s¹ 4d⁵

• [Kr] 5s² 4d⁴

• [Kr] 4s¹ 4d⁵

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NGSS.HS-PS1-1

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Based on electronic configurations, which of the following species would you predict to be most magnetic?

• Sc

• Ti

• V

• Cr

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NGSS.HS-PS1-1

What is the effective nuclear charge of a valence electron in the Al+ cation?

• 2

• 3

• 12

• 13