What is a group of two or more atoms joined together chemically?

What is a group of two or more atoms joined together chemically?

A more or less stable grouping of two or more atoms held together by chemical bonds is called a molecule. The bonded atoms may be of the same element, as in the case of H2, which is called molecular hydrogen or hydrogen gas.

What is a group of 2 or more atoms called?

Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

What is produced when two atoms combine?

When these atoms of the same or any kind combine they form molecules. Thus, two Hydrogen atoms combine to form a Hydrogen molecule. Most atoms can also combine with atoms of different kinds to form compounds of molecules.

What is the formula of Na?


PubChem CID 5360545
Molecular Formula Na
Synonyms 7440-23-5 Na Sodium Natrium Sodio More…
Molecular Weight g/mol
Dates Modify Create /td>

What is the chemical name for CL?

Chlorine (Cl), chemical element, the second lightest member of the halogen elements, or Group 17 (Group VIIa) of the periodic table.

Is chlorine Cl or CI?

Chlorine is a chemical element with symbol Cl and atomic number 17. Classified as a halogen, Chlorine is a gas at room temperature….Chlorine.


Is chloride acidic or basic?

In terms of its acid–base properties, chloride is a very weak base as indicated by the negative value of the pKa of hydrochloric acid. Chloride can be protonated by strong acids, such as sulfuric acid: NaCl + H2SO4 → NaHSO4 + HCl. Ionic chloride salts reaction with other salts to exchange anions.

Is chlorine a base or acid?

When chlorine (in any form) is added to water, a weak acid called Hypochlorous acid is produced. It is this acid, not the chlorine, which gives water its ability to oxidize and disinfect. Proper chlorination and filtration give pool water its clear, sparkling appearance. Chlorine exists as a solid, a liquid and a gas.

What is the pH of pure chlorine?

At a pH of about 5, nearly all the chlorine is present as HOCl, and at pH 8.5, nearly all the chlorine is present as OCl¯. In sanitizing water, hypochlorous acid (HOCl) is 80-100 times more effective as hypochlorite ion (OCl¯).

Is bleach an acid or a base?

Chlorine bleach is extremely basic, as it has a high pH of 13. This means that a chlorine bleach solution has a H+ concentration of about one-millionth of the H+ concentration in pure water.

Is cl2 acidic or basic?

As a chemical warfare agent, chlorine was first used in World War I as a poison gas weapon. In the form of chloride ions, chlorine is necessary to all known species of life….

Atomic properties
Oxidation states −1, +1, +2, +3, +4, +5, +6, +7 (a strongly acidic oxide)
Electronegativity Pauling scale: 3.16

What are 5 uses of chlorine?

Uses & Benefits

  • Water. Chlorine chemistry helps keep drinking water and swimming pools safe.
  • Household Disinfectant.
  • Food.
  • Healthcare.
  • Energy and Environment.
  • Advanced Technology.
  • Building and Construction.
  • Defense and Law Enforcement.