All the metals are solid
A.True
B.false

Hint: Metals have low ionization energies and find it easy to lose valence electrons. The easy sharing of these valence electrons results in a very strong bonding of metal atoms and this gives rise to a high melting point. This makes the metals solid at room temperature.

Complete answer:
The given statement is wrong as Mercury, gallium and cesium are liquid at room temperature. The liquid state of mercury at room temperature is one of the reasons it is used in thermometers. Cesium’s low melting point and softness is a consequence of the size of its atoms. Cesium atoms are larger than those of any other known element.
The reason for the solid state of metals at room temperature is the sharing of electrons between different atoms. Metals have low ionization energies and find it easy to lose valence electrons. One can think of metals as a large network formed by interconnected metal atoms in a sea of valence electrons. The easy sharing of these valence electrons results in a very strong bonding of metal atoms and this gives rise to a high melting point. This makes the metals solid at room temperature.
So, the correct answer is B) false.

Note:
Elemental gallium is a soft, silvery metal at standard temperature and pressure; however in its liquid state it becomes silvery white. If too much force is applied, the gallium may fracture conchoidally. The melting point of gallium is used as a temperature reference point.