In the periodic table, the elements are arranged in ________.
A) alphabetical order
B) order of increasing atomic number
C) order of increasing metallic properties
D) order of increasing neutron content
E) reverse alphabetical order
Correct Answer:
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Q62: Which species has 54 electrons?
A) 
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A)"39K"
B)"32S2-"
C)"35Cl"
D)"27Al3+"
E)"64Cu2+"
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A)"31P"
B)"34S2- "
C)"36Cl"
D)"80Br-"
E)"16O"
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