Which of the following statements is true? Atoms of isotopes of an element have different numbers of electrons. Atoms of isotope
s of an element have different numbers of neutrons. Atoms of the same element all have the same mass. Atoms of isotopes of an element have different numbers of protons.
In organic chemistry the boiling point of 309 k is of fifth member of alkane series which Pentane whose molecular mass is 72 g/mol. Thus, we can say that the molecular formula of the compound which has boiling point 309 K is C5H12.
