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How many valence electrons are present in W4+?

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Which of the following compounds contains the strongest bonds to hydrogen?


A) SiH4
B) CH4
C) HF
D) H2S
E) H2O

F) A) and B)
G) B) and E)

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Which of the following compounds is the least stable?


A) CH4
B) SnH4
C) SiH4
D) GeH4
E) PbH4

F) B) and D)
G) B) and C)

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