Self Assessment B


1	Which of the following is not a lanthanide element?
		A)	Sm
		B)	Es
		C)	Eu
		D)	Dy
		E)	Ho


2	The electron configuration for Ni²⁺ is
		A)	1s²2s²2p⁶3s²3p⁶4s²3d⁸
		B)	1s²2s²2p⁶3s²4s²3d⁶
		C)	1s²2s²2p⁶3s²3p⁵4s⁰3d⁹
		D)	1s²2s²2p⁶3s²3p⁶4s⁰3d⁴
		E)	1s²2s²2p⁶3s²3p⁶4s⁰3d⁸


3	Which of the following species is not isoelectronic with the others?
		A)	V³⁺
		B)	Ca²⁺
		C)	Ar
		D)	Cl^-
		E)	S^2-


4	The single covalent radius of P is 0.11 nm. In comparison, the single covalent radius of Cl should be:
		A)	larger than 0.11 nm.
		B)	smaller than 0.11 nm.
		C)	0.11 nm.


5	Which of the ions listed below has the smallest radius?
		A)	Li⁺
		B)	Na⁺
		C)	K⁺
		D)	Be²⁺
		E)	Mg²⁺


6	Which of the following atoms or ions has the largest radius?
		A)	Mg
		B)	Na
		C)	Na⁺
		D)	Mg²⁺
		E)	Al


7	The first ionization energy of C is 11.3 eV. The first ionization energy of Si should be:
		A)	less than 11.3 eV.
		B)	greater than 11.3 eV.
		C)	11.3 eV.


8	Successive ionization energies, 1st, 2nd, 3rd, etc, provide evidence for the shell structure of the atom. For sulfur atoms, which ionization energy will show an exceptionally large increase over the preceding ionization energy?
		A)	2nd
		B)	4th
		C)	5th
		D)	6th
		E)	7th


9	Which of the following elements has the greatest electron affinity?
		A)	Rb
		B)	C
		C)	I
		D)	Na
		E)	Li


10	Which of the following is a basic oxide?
		A)	P₄O₁₀
		B)	MgO
		C)	Al₂O₃
		D)	SO₂
		E)	Cl₂O₇

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