Which character is different of the two isotopes of an element [NCERT 1971; EAMCET 1980, 92; CPMT 1992]

Which character is different of the two isotopes of an element [NCER

1.	Which character is different of the two isotopes of an element [NCERT 1971; EAMCET 1980, 92; CPMT 1992]
A.	Atomic mass
B.	Atomic number
C.	Number of electrons
D.	Number of protons
Answer» B. Atomic number

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Which character is different of the two isotopes of an element [NCERT 1971; EAMCET 1980, 92; CPMT 1992]

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