Fill in the blanks:
$(i)$ If the orbits around the nucleus contract,the electron will spiral into the nucleus in $....$ seconds.
$(ii)$ Waves used in radio broadcasting have a frequency of $....$ $Hz$.
$(iii)$ The $SI$ unit of frequency is $....$.
$(iv)$ The number of waves present in unit length is called $....$.
$(i)$ If the orbits around the nucleus contract,the electron will spiral into the nucleus in $....$ seconds.
$(ii)$ Waves used in radio broadcasting have a frequency of $....$ $Hz$.
$(iii)$ The $SI$ unit of frequency is $....$.
$(iv)$ The number of waves present in unit length is called $....$.
(N/A) $(i)$ $10^{-8}$
$(ii)$ $10^6$
$(iii)$ Hertz $(Hz)$
$(iv)$ Wave number $(\overline{\nu})$
$(ii)$ $10^6$
$(iii)$ Hertz $(Hz)$
$(iv)$ Wave number $(\overline{\nu})$
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