If you remove two protons and two neutrons from a gold atom (Au) , what new element is formed?
A) Ir2-
B) Au
C) Re
D) Au2-
E) Tl
Correct Answer:
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Q50: Which element has the atomic number 12?
A)Mg
B)C
C)B
D)Na
E)Be
Q54: Which element has the atomic number 9?
A)F
B)Ne
C)B
D)Na
E)Be
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