Question

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Answer 1

Answer:

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Explanation:

1. 15.7mm of Hg
2. n = 4, l = 3, m = +1, s =+1/2
3.  answer d.....................                                                   Second ionisation energy of potassium is greater than that of Ca. In case of potassium ion (i.e. K+) the electron removal from the stable inert gas configuration (1s22s22p53s23p5) requires much higher energy.
4. Velocity v=10m/s
5. The lobes of the dxy orbital are oriented in between the axes at an angle of 450 . So the maximum probability of finding an electron is 450 in between x and y axes
6. Half of this =0.5×20N=10N atoms.option a and b