Assertion (A): Two atoms of different elements having same mass number but different atomicnumbers are called isobars.Reason (R): Atomic number is the number of protons present and atomic number is the totalnumber of protons and neutrons present in a nucleus

Two atoms are isotopes if they havea) different atomic numbers.b) the same mass number, but different atomic numbers.c) the same number of protons and neutrons.d) the same number of electrons, but a different number of neutrons.e) the same atomic number, but a different mass number.

Differentiate among atomic number, mass number, and isotopes, and which of these distinguishes one element from another

What is the difference between an atom's mass number and its atomic number?Select all statements that apply.They are the sameThe atomic number is just the number of protonsThe mass number is the number of both protons and neutronsThe mass number is the number of protons minus the number of neutrons

All atoms of the same element are alike in that each atom has the same ____________________. anumber of protonsbatomic masscnumber of neutronsdmass number

Which statement is correct about the isotopes of an element?A. They have the same mass numberB. They have the same electron arrangementC. They have more protons than neutronsD. They have the same numbers of protons and neutrons