Home › CBSE Class 9 › Chemistry › Alcohols Phenols Ethers › Carbon has two stable isotopes — Carbon-12 (¹²C)…
Carbon has two stable isotopes — Carbon-12 (¹²C) with 6 neutrons and Carbon-13 (¹³C) with 7 neutrons. Both have:
ADifferent colours
BThe same chemical properties because chemistry depends on electrons, which are the same in both isotopes (6 electrons each)
CDifferent numbers of protons
DDifferent chemical properties because they have different masses
Answer & Solution
Correct answer: B. The same chemical properties because chemistry depends on electrons, which are the same in both isotopes (6 electrons each)
Chemical behaviour depends on electrons (which determine bonding). Both ¹²C and ¹³C have 6 electrons, so they behave identically in chemical reactions. The mass difference shows up only in physical properties (mass spectrometry, slight differences in reaction rates — the 'kinetic isotope effect').
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?