Periodic TableMedium
Question
Identify the incorrect statement from the following:
Options
A.The largest and the smallest species among $Mg,{Mg}^{2 +},Al$ and ${Al}^{3 +}$ are Al and ${Mg}^{2 +}$ respectively.
B.The IUPAC name of the element with atomic number 107 is Unnilseptium.
C.The similarity in behaviour of Li with Mg is referred to as 'diagonal relationship'
D.The oxidation state and covalency of AI in $\left\lbrack AICl\left( H_{2}O \right)_{5} \right\rbrack^{2 +}$ are 3 and 6, respectively.
Solution
Sol. [Key Concept: Evaluating statements — pick the incorrect one]
The largest species is Mg and the smallest one is ${Al}^{3 +}$ among Mg, ${Mg}^{2 +}$, Al and ${Al}^{3 +}$.
- Unnilseptium element has atomic number 107
- Li and Mg are diagonally related and have similar properties.
- The oxidation state and covalency of AI in $\left\lbrack AlCl\left( H_{2}O \right)_{5} \right\rbrack^{2 +}$ are +3 and 6 respectively
∴ Statement A is incorrect
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