Question

Which element is a liquid at 1000 k 1.Ag 2.Al 3.Ca 4.Ni

Answer 1

in these options not any Element are liquid at 1000k i think you type wrong in first option It is Hg not Ag and Hg is liquid at 1000 k

Answer 2

Answer: The correct answer is Option 2.

Explanation:

All the given elements are considered as metals because they all are solid at room temperature and solids are generally solid at room temperatures.

For a solid to change into liquid, it has to attain a minimum temperature known as melting point of that solid.

The melting point of the given elements are:

Silver (Ag) = 1235 K

Aluminium (Al) = 933.5 K

Calcium (Ca) = 1115 K

Nickel )Ni) = 1728 K

From the above melting points, the element which will turn into liquid below  1000 K will be aluminium.

Hence, the correct answer is Option 2.