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What has the atomic number 17?

What has the atomic number 17?

The Elements, sorted by Atomic Number

Atomic Number Symbol Atomic Mass (amu, g/mol)
17 Cl 35.453
18 Ar 39.948
19 K 39.0983
20 Ca 40.08

What is the mass number of chlorine 17?

The atomic number of Chlorine is 17 and mass number is 35.

What does the 17 in chlorine mean?

Chlorine (Cl) exists as a yellow green gas with a pungent smell. It has the atomic number 17 in the periodic table and belongs in Group 17, the Halogens. It took many years before Humphrey Davy concluded that the new gas discovered was a new element, he named it Chlorine after the Greek ‘Chloros’ meaning yellow green.

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 chlorine a liquid?

Chlorine is a greenish yellow gas at room temperature and atmospheric pressure. It is two and a half times heavier than air. It becomes a liquid at −34 °C (−29 °F). Its high affinity for hydrogen allows chlorine to react with many compounds containing hydrogen.

What is a chlorine atom that has 17 protons and 18 neutrons called?

All atoms which contain 17 protons are called chlorine atoms. An atom of chlorine-35 contains 18 neutrons (17 protons + 18 neutrons = 35 particles in the nucleus) while an atom of chlorine-37 contains 20 neutrons (17 protons + 20 neutrons = 37 particles in the nucleus).

What is Ca on the periodic table?

Calcium was named after the Latin term calx meaning lime, and is a reactive silvery metallic element found in Group 2 of the periodic table. It was first isolated in 1808 in England when Sir Humphry Davy electrolyzed a mixture of lime and mercuric oxide.

Why was chlorine named chlorine?

The true nature of the gas as an element was recognized in 1810 by English chemist Humphry Davy, who later named it chlorine (from the Greek chloros, meaning “yellowish green”) and provided an explanation for its bleaching action.

What are the elements of 17th group?

The halogen elements are the six elements in Group 17 of the periodic table. Group 17 is the second column from the right in the periodic table and contains six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (As), and tennessine (Ts).

What is CL used for?

Chlorine kills bacteria – it is a disinfectant. It is used to treat drinking water and swimming pool water. It is also used to make hundreds of consumer products from paper to paints, and from textiles to insecticides. About 20% of chlorine produced is used to make PVC….

Discovery date 1774
Allotropes Cl2

What states can chlorine be in?

Fact box

Group 17 −101.5°C, −150.7°F, 171.7 K
Atomic number 17 35.45
State at 20°C Gas 35Cl, 37Cl
Electron configuration [Ne] 3s23p5 7782-50-5
ChemSpider ID 4514529 ChemSpider is a free chemical structure database

Is bleach and liquid chlorine the same?

Bleach and chlorine are the same chemical, and both will keep your pool sparkling. In truth, bleach contains the same base chemical as pool chlorine. That chemical is, of course, chlorine, and the only major difference between the two products is the concentration strength.

What is the atomic number 17 of chlorine?

Chlorine is atomic number 17 with element symbol Cl.

What are the facts about the element chlorine?

Fast Facts: The Element Chlorine 1 Element Name: Chlorine 2 Atomic Number: 17 3 Element Symbol: Cl 4 Appearance: Pale greenish-yellow gas 5 Element Group: Halogen

Why is chlorine a member of the halogen group?

Chlorine is a member of the halogen group of elements and directly combines with almost all of the other elements. Chlorine gas is a greenish yellow. Chlorine figures prominently in many organic chemistry reactions, particularly in substitutions with hydrogen. The gas acts as an irritant for respiratory and other mucous membranes.

How is chlorine still used in everyday life?

Chlorine compounds are used in medicines, plastics, antiseptics, insecticides, food, paint, solvents, and many other products. While chlorine is still used in refrigerants, the number of chlorofluorocarbons (CFCs) released into the environment has dramatically declined.