(i) Write outer electronic configuration of `Cr` atom. Why are half filled orbitals more stable? (ii) State Heisenberg

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Q 3112591430.     (i) Write outer electronic configuration of `Cr`
atom. Why are half filled orbitals more stable?
(ii) State Heisenberg's uncertainty principle. An
electron has a velocity of `50 m s^(-1)`, accurate
upto `99.99%`. Calculate the uncertainty in
locating its position.
(Mass of electron =` 9.1 xx 10^(-31) kg`,
`h = 6.6 xx 10^(-34) J s`)

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