MCQ
Which of the following does not give bicarbonate test with $NaHCO_3$
- A

- B

- ✓

- D






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while $E_{Z{n^{2 + }}/Zn}^o = - 0.76\,V$
| Metal | $Li$ | $Na$ | $K$ | $Mg$ | $Cu$ | $Ag$ | $Fe$ | $Pt$ | $W$ |
| $\phi( eV )$ | $2.4$ | $2.3$ | $2.2$ | $3.7$ | $4.8$ | $4.3$ | $4.7$ | $6.3$ | $4.75$ |
As the $s-$ character of a hybrid orbital decreases
$(I)$ The bond angle decreases $(II)$ The bond strength increases
$(III)$ The bond length increases $(IV)$ Size of orbitals increases