Tin is a solid at room temperature.Which one of the following explains why tin is a solid at room temperature?It has a high boiling & melting point.It has a high density.It is malleable.It is ductile.

The state of matter (solid, liquid, gas) of a substance at room temperature is determined by its melting and boiling points. If a substance's melting point is above room temperature, it will be a solid. If its boiling point is below room temperature, it will be a gas. If its melting point is below room temperature and its boiling point is above, it will be a liquid.

In the case of tin, it is a solid at room temperature because it has a high melting point. The melting point of tin is 231.93 degrees Celsius, which is much higher than room temperature (generally considered to be about 20-25 degrees Celsius). Therefore, at room temperature, tin is in a solid state.

The other properties mentioned - high density, malleability, and ductility - are characteristics of metals but do not directly determine the state of matter at a given temperature. High density refers to the mass per unit volume of a substance. Malleability is the ability of a substance to be hammered or rolled into thin sheets. Ductility is the ability of a substance to be drawn into a wire. While these are important properties for many applications of metals, they do not determine whether a substance is a solid, liquid, or gas at room temperature.