MCQ
The correct sequence of increasing covalent character is represented by
- A$LiCl < NaCl < BeC{l_2}$
- B$BeC{l_2} < NaCl < LiCl$
- ✓$NaCl < LiCl < BeC{l_2}$
- D$BeC{l_2} < LiCl < NaCl$
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$(A)$ Uncertainty principle rules out the existence of definite paths for electrons.
$(B)$ The energy of an electron in $2 s$ orbital of an atom is lower than the energy of an electron that is infinitely far away from the nucleus.
$(C)$ According to Bohr's model, the most negative energy value for an electron is given by $n=1$, which corresponds to the most stable orbit.
$(D)$ According to Bohr's model, the magnitude of velocity of electrons increases with increase in values of $n$.
($F = 96,500\;C\;mo{l^{ - 1}}; \,\, R = 8.314\;J{K^{ - 1}}mo{l^{ - 1}})$
$XeF _4, SF _4, SiF _4 . BF _4^{--}, BrF _4^{-},\left[ Cu \left( NH _3\right)_4\right]^{2+},\left[ FeCl _4\right]^{2-},\left[ CoCl _4\right]^{2-}$ and $\left[ PtCl _4\right]^{2-}$.
Defining shape on the basis of the location of $X$ and $Z$ atoms, the total number of species having a square planar shape is
$[CH_3CH(CH_3)]_2 \,C(CH_2CH_3)C(CH_3) C(CH_2CH_3)_2$