MCQ
Correct sequence of ionic radii is:
- ✓$K ^{+}> Na ^{+}> Li ^{+}$
- B$Li ^{+}> K ^{+}> Na ^{+}$
- C$Na ^{+}> K ^{+}> Li ^{+}$
- D$Li ^{+}> Na ^{+}> K ^{+}$
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If the above equation is balanced with integer coefficients, the value of $c$ is ...........
(Round off to the Nearest Integer).
$(a)$ Benzene
$(b)$ Toluene
$(c)$ Chlorobenzene and
$(d)$ Phenol
[Atomic masses (in $u$) $Mn =55 ; Cl =35.5 ; O =16, I =127, Na =23, K =39, S =32]$
$(1)$ $Y$ is diamagnetic in nature while $Z$ is paramagnetic
$(2)$ Both $Y$ and $Z$ are coloured and have tetrahedral shape
$(3)$ In both $Y$ and $Z , \pi$-bonding occurs between $p$-orbitals of oxygen and $d$-orbitals of manganese.
$(4)$ In aqueous acidic solution, $Y$ undergoes disproportionation reaction to give $Z$ and $MnO _2$.