What is the symbol for the isotope with A = 31 and Z = 15?
A) 
B) 
C) 
D) 
Correct Answer:
Verified
Q23: Which element is an s block element?
A)S
B)Ar
C)He
D)La
E)None
Q24: How many protons are in the isotope
Q25: How many neutrons are in the isotope
Q26: In the diagram below, which highlighted element
Q27: Which statement concerning the elements fluorine, chlorine,
Q28: How many electrons are in the isotope
Q30: The proper electron-dot symbol for aluminum is
A)
Q30: Which element has the smallest ionization energy?
A)K
B)Ga
C)Br
D)Rb
Q36: Which element is a d block element?
A)S
B)Ar
C)Ag
D)As
E)None
Q46: Antimony is a metalloid containing 51 protons
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