MCQ
Reagent $(A)$ in the reaction is
- ✓$O_3 /Zn(H_2O)$
- B$HIO_4$
- C$CrO_3$
- DCold dil. $KMnO_4$
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$(A)\, n = 5, m_l= + 1$
$(B)\, n =2, l =1, m_l= -1, m_s = -1/2$
The maximum number of electron$(s)$ in an atom that can have the quantum numbers as given in $(A)$ and $(B)$ are respectively
$(I)$ The radius of an anion is larger than that of the parent atom.
$(II)$ The ionization energy generally increases with increasing atomic number in a period.
$(III)$ The electronegativity of an element is the tendency of an isolated atom to attract an electron.
Which of the above statements is/are correct?
Statement $(I)$ : A $\pi$ bonding $MO$has lower electron density above and below the inter-nuclear asix.
Statement $(II)$ : The $\pi^*$ antibonding $MO$ has a node between the nucles.In the light of the above statements, choose the most appropriate answer from the options given below: