MCQ
Which is metalloid
- A$Pb$
- ✓$Sb$
- C$Bi$
- D$Zn$
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In an experiment, $2.0$ $moles$ of $NOCl$ was placed in a one-litre flask and the concentration of NO after equilibrium established, was found to be $0.4$ $mol / L$. The equilibrium constant at $30^{\circ} C$ is $.......\times 10^{-4}$
$(I)$ 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?
