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Section 3: Molecular Structures


1.	When a hydrogen atom is part of a molecular structure, it is always a ________ atom. Need a Hint?
		A)	terminal
		B)	ionic
		C)	central
		D)	1^–


2.	In the compound H₂SO₄, which element will be the central atom in the molecular structure? Need a Hint?
		A)	H
		B)	S
		C)	O
		D)	both S and O


3.	In forming a molecular structure, each atom should have ________ electrons around it unless there is some specific reason why this cannot be achieved. Need a Hint?
		A)	2
		B)	4
		C)	6
		D)	8


4.	Which element can share only one pair of electrons? Need a Hint?
		A)	H
		B)	C
		C)	N
		D)	O


5.	To determine the number of bonding electron pairs, you must divide the number of electrons available for bonding by _______. Need a Hint?
		A)	1
		B)	2
		C)	3
		D)	4


6.	How many lone pairs of electrons are present in a molecule of water? Need a Hint?
		A)	1
		B)	2
		C)	3
		D)	4


7.	When two or more Lewis structures can be used to represent a single molecule, these multiple structures are ______________. Need a Hint?
		A)	resonance structures
		B)	isomeric structures
		C)	polar structures
		D)	liquid structures


8.	Which of the following atoms will be an exception to the octet rule in a molecule? Need a Hint?
		A)	O
		B)	F
		C)	C
		D)	B