How many electrons can occupy the 2s subshell?
A) 1
B) 2
C) 6
D) 8
E) 10
Correct Answer:
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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
Q42: Which element is most likely to have
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
Q48: Which chemical symbol represents a non-metal?
A)Al
B)B
C)Ga
D)Si
E)P
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