Atomic mass of an element is equal to the sum of?
Electron and proton
Electron and neutron
Proton and neutron
None of the above
Atomic mass of an element is equal to the sum of proton and neutrons.
(a) an atom has equal number of electrons and protons
(b) an atom has equal number of electrons and neutrons
(c) an atom has equal number of protons and neutrons
(d) an atom has equal number of electrons, protons and neutrons
Which of the following statement is correct about the atom of an element ?
(a) an atom can have only protons and neutrons but no electrons.
(b) an atom can have only electrons and neutrons but no protons
(c) an atom can have only electron and proton but no neutron
(d) an atom must always have a proton, neutron and electron
An atom of an element has 11 protons, 11 electrons and 12 neutrons. What is the the atomic mass?