Self Assessment A


1	How many valence electrons are there in an atom of arsenic?
		A)	6
		B)	5
		C)	4
		D)	3
		E)	2


2	All of the following Groups contain representative elements except:
		A)	Group 1A
		B)	Group 3A
		C)	Group 5A
		D)	Group 5B
		E)	Group 6A


3	The general electron configuration for the anion formed from a neutral atom of any Group VII element is:
		A)	ns²np⁶
		B)	ns²np⁵
		C)	ns²np⁴
		D)	ns²np³
		E)	ns²


4	Which of the species listed below is not isoelectronic with the others?
		A)	O^-
		B)	F^-
		C)	Mg²⁺
		D)	Na⁺
		E)	N^3-


5	Which of the following atoms has the largest radius?
		A)	N
		B)	F
		C)	Cl
		D)	Li
		E)	Na


6	Which of the following species has the largest radius?
		A)	Cl
		B)	Cl^-
		C)	Al³⁺
		D)	Na⁺
		E)	F^-


7	Which of the following elements will have the largest first ionization energy?
		A)	C
		B)	Cl
		C)	Na
		D)	Al
		E)	F


8	Which of the following elements will have the greatest electron affinity?
		A)	Cl
		B)	K
		C)	He
		D)	Na
		E)	Rb


9	On the periodic table, the elements having the largest degree of metallic character are found
		A)	at the top of Group IIIA.
		B)	at the top of Group IA.
		C)	at the top of Group VIIA.
		D)	at the bottom of Group IA.
		E)	at the bottom of Group VIIA.


10	Which of the following is an amphoteric oxide?
		A)	Na₂O
		B)	MgO
		C)	Al₂O₃
		D)	SO₂
		E)	Cl₂O₇

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