Consider 3rd orbit of He+ (Helium), usin...

Consider 3rd orbit of He+ (Helium), using non- relativistic approach, the speed of electron in this orbit will be [given `K = 9 × 10^9` constant, `Z=2` and h (Planck's Constant)=`6.6 × 10^-34 J s`]

`1.46xx10^6m//s`

`0.73 xxl0^6m//s`

`3.0 xx l0^8m//s`

`2.92 xx10^6 m//s`

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