Question

Zn<Mg<Ca is order of the reactivity True Or false​

Answer 1

$\large{\underline{\underline{\red{\sf{\purple{\leadsto } Reactivity\: Series:-}}}}}$

It is a series in which metals are arranged in decreasing order ( descending order ) of their reactivity . More reactive metal is placed above less reactive metal .

It is used to tell whether a metal can displace another metal from its salt solution .

$\green{\tt \orange{\mapsto}\:Have\:a\: look\: at\: this\:table:-}$

$\boxed{\begin{tabular}{|c|c|} \cline{1-2} N ame of Atom & Mnemonics \\ \cline{1-2} \\ Potassium & Please \\ \cline{1-2}\\ Sodium & Stop \\ \cline{1-2}\\ Calcium & Calling \\ \cline{1-2}\\ Magnesium & Me \\ \cline{1-2}\\ Aluminium &A \\ \cline{1-2}\\ Zinc&Zebra \\ \cline{1-2}\\ Iron & In \\ \cline{1-2}\\ Lead & Library \\ \cline{1-2}\\ Hydrogen &Hey\\ \cline{1-2}\\ Copper&Call\\ \cline{1-2}\\ Mercury & Me \\ \cline{1-2}\\ Silver & Some \\ \cline{1-2}\\ Gold & Good \\\cline{1-2}\end{tabular}}$

From the reactivity series it is clear that ,

• Magnesium is more reactive than Zinc .
• Calcium is more reactive than Magnesium .

So , the given condition $\bf\red{Zn<Mg<Ca}$ is $\bf{\purple {correct}}$

Answer 2

The reactivity series

In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions.

A good way to remember the order of a reactivity series of metals is to use the first letter of each one to make up a silly sentence. For example: People Say Little Children Make A Zebra Ill Constantly Sniffing Giraffes.

Observations of the way that these elements react with water, acids and steam enable us to put them into this series.

Non-metals in the reactivity series

It is useful to place carbon and hydrogen into the reactivity series because these elements can be used to extract metals.

Note that zinc and iron can be displaced from their oxides using carbon but not using hydrogen. However, copper can be extracted using carbon or hydrogen.

Hence, may be answer is "True"