Question

Which of the following metal cannot occur in native state?

• A. $Cu$
• B. $Al$
• C. $Ag$
• D. None of the above

Answer 1

The correct option is B $Al$

$K,Na,Ca,Mg,Al\to$ High Reactivity

$Zn,Fe,Pb,Cu\to$ Moderate Reactivity

$Ag,Au\to$ Low reactivity

$\Rightarrow$ Aluminium cannot occur in the native state. It occurs naturally in the form of oxides.

$\Rightarrow$ It is at the top of the electrochemical series which shows it has a high reacting nature.

$\Rightarrow$ So, it occurs naturally with other elements in combination.