Question

Metal which does not react even with steam is:
$A.$ Potassium
$B.$ Iron
$C.$ Magnesium
$D.$ Silver

Answer 1

** All the metal generally reacts with water, some react with steam and some metal even does not react with metal that are inert and have no tendency to react with others. They are almost stable at very high temperatures.

Complete answer:
Out of potassium, iron, magnesium and silver. Out of them Potassium and magnesium react with water under normal conditions and produce magnesium hydroxide, Iron does not react with normal water but it reacts with steam and silver metal does not react with water as well as steam because silver metal are very stable.
Thus, silver metal does not react even with steam due to their high stability.

So, the correct option is D.

Additional information:
- Potassium: Potassium is an alkali metal it presents in group $1$ in the periodic table. Atomic number of potassium is $19$. It has $19$ protons and $19$ electrons in neutral atoms. Potassium is a very reactive metal. When it reacts with water to produce hydrogen gas.
- Magnesium: Magnesium is an alkali metal, present in group $2$ in the periodic table. Atomic number of magnesium is $12$. It has $12$ protons and $12$ neutron in a neutral atom. Magnesium is slightly less reactive than potassium. It also produces hydrogen gas with reaction of water.
- Iron: Iron is a transition metal, present in $d -$ block in the periodic table. Atomic number of iron is $26$. It has $26$ protons and $26$ neutron in a neutral atom. Iron is less reactive than potassium and magnesium. It produces hydrogen gas with only steam.
- Silver: Silver is also a transition metal and found in $d -$ block in the periodic table. Atomic number of silver is $47$. It has $47$ neutrons and $47$ electrons in a neutral atom. Silver is a very stable atom out of the given atoms. It does not produce hydrogen gas with water even with steam.

Note:
Not only silver does not react even with steam there are also several metals that also do not react with steam. Metal such as lead, copper, and gold do not react with water at all. They are also very stable.