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Chemical Bonding and Periodic Table
100
Which formula represents a molecular substance?
a covalent compound
200
Which bond has the greatest ionic character?
H-F
300
Which sequence of Group 18 elements demonstrates a gradual decrease in the strength of the Van der Waals forces?
Xe, Kr, Ar, Ne
400
Which halogens are gases at STP?
chlorine and fluorine
500
At STP, which substance is the best conductor of electricity?
Any metal Ex. Silver