Home › CBSE Class 9 › Chemistry › Alcohols Phenols Ethers › Atoms of the same element with different mass nu…
Atoms of the same element with different mass numbers (i.e., different numbers of neutrons) are called:
AIons
BIsotopes
CIsobars
DAtoms
Answer & Solution
Correct answer: B. Isotopes
Isotopes: same atomic number (same element) but different mass numbers (different neutron counts). Examples: hydrogen has three isotopes — protium (¹H, no neutrons), deuterium (²H, 1 neutron), tritium (³H, 2 neutrons). All behave chemically the same.
Related questions
Besides VSEPR and the Kossel Lewis approach, which two theories are listed?Which theory is abbreviated VSEPR?Why can lattice enthalpy not be calculated directly from attraction and repulsion alone?Ionic bonds form most easily between elements with low ionization enthalpies and high negaWhat is the lattice enthalpy of sodium chloride?Lattice enthalpy is the energy required to separate one mole of an ionic solid into:The structures contributing to a resonance hybrid are called:Why was the concept of resonance introduced?