Of the ions \[Z{{n}^{2+}},\] \[N{{i}^{2+}}\] and \[C{{r}^{3+}}\][atomic number of \[Zn=30,\] \[Ni=28,\] \[Cr=24\]] [MP PET 1996]

Only \[Z{{n}^{2+}}\] is colourless and \[N{{i}^{2+}}\] and \[C{{r}^{3+}}\] are coloured

Only \[N{{i}^{2+}}\] is coloured and \[Z{{n}^{2+}}\] and \[C{{r}^{3+}}\] are colourless

Of the ions \[Z{{n}^{2+}},\] \[N{{i}^{2+}}\] and \[C{{r}^{3+}}\][atomi

1.	Of the ions \[Z{{n}^{2+}},\] \[N{{i}^{2+}}\] and \[C{{r}^{3+}}\][atomic number of \[Zn=30,\] \[Ni=28,\] \[Cr=24\]] [MP PET 1996]
A.	Only \[Z{{n}^{2+}}\] is colourless and \[N{{i}^{2+}}\] and \[C{{r}^{3+}}\] are coloured
B.	All three are colourless
C.	All three are coloured
D.	Only \[N{{i}^{2+}}\] is coloured and \[Z{{n}^{2+}}\] and \[C{{r}^{3+}}\] are colourless
Answer» B. All three are colourless

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Of the ions \[Z{{n}^{2+}},\] \[N{{i}^{2+}}\] and \[C{{r}^{3+}}\][atomic number of \[Zn=30,\] \[Ni=28,\] \[Cr=24\]] [MP PET 1996]

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