Which element is most likely to have chemical properties similar to those of bromine (atomic number 35) ?
A) S (atomic number 16)
B) Se (atomic number 34)
C) Kr (atomic number 36)
D) Te (atomic number 52)
E) I (atomic number 53)
Correct Answer:
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Q37: Hydrogen exists as three isotopes.These isotopes differ
Q38: An atom with a mass number of
Q39: The number of neutrons in an atom
Q40: The symbol of the element with 23
Q41: Magnesium is an example of a(an)
A)alkali metal.
B)alkaline
Q43: How many electrons can occupy the 2s
Q44: Which group contains only metalloids?
A)Ni,Pd,Pt
B)Si,Ge,As
C)Ce,Pr,Nd
D)Kr,Xe,Rn
E)Po,Fr,Ac
Q45: Which element is not a semimetal?
A)Al
B)Si
C)Ge
D)As
E)none of
Q46: Which chemical symbol represents a metalloid?
A)Al
B)B
C)Ga
D)Zn
E)Ar
Q47: Which of the following is an alkali
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