Question

The following elements are listed in order of decreasing reactivity as they appear in the reactivity series.

$Na,Ca,Mg,Zn,Fe,H,Cu,Hg,Ag,Au$

The element that can displace all the elements in the series is :

• A. $Na$
• B. $Au$
• C. $H$
• D. $Fe$
• E. $Cu$

Answer 1

The correct option is A $Na$

$Sodium$ lies above in the reactivity series. Therefore, it can displace all the elements from the series.