The chemical symbol (not formula) of chlorine is Cl.
The chemical symbol (not formula) of mercury is Hg.
The chemical symbol of zinc is Zn.
The chemical symbol of neodymium is Nd.
Two, since chlorine is a diatomic gas in its natural state. Therefore, the chemical formula for elemental chlorine is Cl2.
Hydrogen has a diatomic molecule - H2.
Silver almost always has an oxidation state of 1+ and Chlorine an oxidation state of 1-. Therefore, silver chloride has a simple formula of AgCl.
At standard temperature and pressure, chlorine will be a gas.
Assuming the standard 2 oxidation state, Pb(NO3)2
At room temperature and standard pressure the element Chlorine is a gas.
H2O is the chemical formula for forming one molecule of water.
Chemical formulas do not change with phase state: The chemical symbol [NOT Formula, for a chemical element] for silicon is always Si.
Ice is a chemical with a chemical formula depending on the state as wet or dry.
The chemical symbol is La (s) in its standard state
At STP (standard temperature and pressure), it is a diatomic gas, Cl2.
The chemical formula for water is H2O. The chemical formula stays the same even if water is in a different state (solid, liquid or gas).