According to qauntum mechanical model of H-like species, and electron can be represented by a wave function `(psi)` which contain all dynamic information about the electron. The nature of wave function depends on the type of the orbital to which the electron belongs. For an orbital `psi=[sqrt(2)/(81sqrt(3pi))]((1)/(a_(0)))^(3//2)(27-18sigma+2sigma^(2))e^((sigma)/(3))` Where, `sigma =((Zr)/(a_(0))),r` = radial distance from nucleous, `a_(0)=52.9pm` The orbital could possibly beA. `4s`B. `4p`C. `3s`D. `3p`

According to qauntum mechanical model of H-like species, and electron

1.	According to qauntum mechanical model of H-like species, and electron can be represented by a wave function `(psi)` which contain all dynamic information about the electron. The nature of wave function depends on the type of the orbital to which the electron belongs. For an orbital `psi=[sqrt(2)/(81sqrt(3pi))]((1)/(a_(0)))^(3//2)(27-18sigma+2sigma^(2))e^((sigma)/(3))` Where, `sigma =((Zr)/(a_(0))),r` = radial distance from nucleous, `a_(0)=52.9pm` The orbital could possibly beA. `4s`B. `4p`C. `3s`D. `3p`
Answer» Correct Answer - C `therefore` It must be a 3s-orbital.

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