To determine which metal among the given options has the highest melting point, we need to consider the melting points of each metal:
Hg (Mercury): Mercury is a liquid at room temperature with a melting point of approximately -38.83°C.
Ag (Silver): Silver has a relatively high melting point of about 961.8°C.
Ga (Gallium): Gallium has a low melting point of around 29.76°C, which is why it can melt in your hand.
Cs (Caesium): Caesium is highly reactive and has a melting point of 28.5°C.
From the melting points listed above, it is clear that silver (Ag) has the highest melting point at 961.8°C. This is significantly higher than the other metals listed, which are notable for their relatively low melting points.
