What is the mass number of an atom that contains 30 protons,30 electrons,and 35 neutrons?
A) 5
B) 30
C) 65
D) 95
Correct Answer:
Verified
Q49: What is the atomic number of magnesium?
A)12
B)24
C)25
D)55
Q50: Which contains the largest number of neutrons?
A)C-12
B)P-31
C)Br-80
D)Sr-90
Q51: The average mass of one atom of
Q52: The concept that most of the atom's
Q53: Models of the atom were proposed by
Q55: Which isotope contains the same number of
Q56: Which contains the fewest neutrons?
A)H-2
B)H-3
C)He-4
D)He-5
Q57: What is the number of neutrons in
Q58: What is the mass number of an
Q59: The element with atomic number 27 is
A)Carbon
B)Copper
C)Cobalt
D)Calcium
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