Which of the following statements is incorrect?
- AMetals in highest oxidation states are more stable in oxides than in fluorides.
- BAll elements of $3d$ series exhibit variable oxidation states.
- CIn highest oxidation states,the transition metals show acidic character.
- D$Mn^{3+}$ and $Co^{3+}$ are oxidizing agents in aqueous solution.
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Identify the ferromagnetic element from the following.
Out of all the known elements,the percentage of transition elements is approximately $......\%$
Difficult
View SolutionNumber of paramagnetic ions among the following $d$- and $f$-block metal ions is . . . . . . . $Mn^{2+}$, $Cu^{2+}$, $Zn^{2+}$, $Yb^{2+}$, $Sc^{3+}$, $La^{3+}$, $Gd^{3+}$, $Lu^{3+}$, $Ti^{4+}$, $Ce^{4+}$. (Atomic number of $Mn = 25$, $Cu = 29$, $Zn = 30$, $Yb = 70$, $Sc = 21$, $La = 57$, $Gd = 64$, $Lu = 71$, $Ti = 22$, $Ce = 58$)
The components of German silver alloy are:
Easy
View SolutionMatch the elements in List-$I$ with their electronic configurations in List-$II$.
List-$I$ List-$II$ $(1)$ $Ti^+$ $(A)$ $(n-1)d^4ns^2$ $(2)$ $_{30}Zn$ $(B)$ $(n-1)d^{10}ns^1$ $(3)$ $_{24}Cr$ $(C)$ $(n-1)d^2ns^0$ $(4)$ $_{29}Cu$ $(D)$ $(n-1)d^5ns^1$ $(E)$ $(n-1)d^0ns^2$ $(F)$ $(n-1)d^{10}ns^2$
| List-$I$ | List-$II$ |
| $(1)$ $Ti^+$ | $(A)$ $(n-1)d^4ns^2$ |
| $(2)$ $_{30}Zn$ | $(B)$ $(n-1)d^{10}ns^1$ |
| $(3)$ $_{24}Cr$ | $(C)$ $(n-1)d^2ns^0$ |
| $(4)$ $_{29}Cu$ | $(D)$ $(n-1)d^5ns^1$ |
| $(E)$ $(n-1)d^0ns^2$ | |
| $(F)$ $(n-1)d^{10}ns^2$ |
Easy
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