Here's a breakdown of the elements by their states of matter at room temperature (25°C):

Solids:

* Metals: All metals are solid at room temperature except for mercury (Hg), which is a liquid.

* Nonmetals:

* Boron (B)

* Carbon (C)

* Silicon (Si)

* Phosphorus (P) (most allotropes)

* Sulfur (S) (most allotropes)

* Selenium (Se)

* Iodine (I)

Liquids:

* Nonmetals:

* Bromine (Br)

* Mercury (Hg)

Gases:

* Nonmetals:

* Hydrogen (H)

* Helium (He)

* Nitrogen (N)

* Oxygen (O)

* Fluorine (F)

* Neon (Ne)

* Chlorine (Cl)

* Argon (Ar)

* Krypton (Kr)

* Xenon (Xe)

* Radon (Rn)

Note:

* Allotropes: Some elements, like carbon, phosphorus, and sulfur, can exist in different forms called allotropes. These allotropes can have different physical properties, including state of matter. For example, carbon exists as graphite (solid) and diamond (solid).

* Conditions matter: The state of matter of an element can change with temperature and pressure. For example, water is a liquid at room temperature but becomes a solid (ice) at 0°C and a gas (steam) at 100°C.

Let me know if you have any other questions!