Which of the following statement(s) is/are correct about the isotopes of an elements? They have the same
I. chemical properties
II. nucleon number
III proton number
I. chemical properties
II. nucleon number
III proton number
-
A.
I only -
B.
II only -
C.
I and II only -
D.
I and III only -
E.
I,II and III