An atom with atomic weight 19 has 5 electron in L shell what is the atomic number of that atom?
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ATOMIC MASS=NO.OF PROTON+NO. OF ELECTRON
19=no.ofproton+5
no.of proton=19-5=14
atomic no.=no. of proton=no. of electron
14=14=14
therefore, atomic no.=14
19=no.ofproton+5
no.of proton=19-5=14
atomic no.=no. of proton=no. of electron
14=14=14
therefore, atomic no.=14
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