atomic number 17

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The term "atomic number 17" refers to a specific element on the periodic table of elements. This element is called Chlorine. Let's break down this explanation so it's easy to understand.

Basic Explanation

• Atomic Number: This is a number that tells you how many protons are in the nucleus (the center part) of an atom of an element. Each element has a unique atomic number.
• 17: This means that Chlorine has 17 protons.

Characteristics of Chlorine

• Nonmetallic: Chlorine is not a metal; it is a type of element known as a nonmetal.
• Halogens: Chlorine belongs to a group of elements called halogens, which also includes fluorine, bromine, iodine, and astatine.
• Gas: Chlorine is commonly found as a gas at room temperature. It is known for being yellowish and having a strong, irritating smell.

Uses of Chlorine

• Water Purification: Chlorine is often used to kill bacteria in drinking water to make it safe for people.
• Bleaching Agent: It is used in products that whiten clothes and paper.
• Disinfectant: Chlorine is also used to clean surfaces and kill germs.

Occurrence

• Chlorine is not usually found alone in nature. Instead, it is most often found in compounds, like table salt or in seawater.

Example Sentence

• "The swimming pool is treated with chlorine to keep the water clean and safe for swimming."

Advanced Usage

In chemistry and industry, chlorine is used in various reactions to create other chemicals and compounds. For example, it can be combined with sodium to make sodium chloride, which is table salt.

Word Variants

• Chlorine (noun): The name of the element.
• Chlorinated (adjective): Something that has had chlorine added to it, like chlorinated water.

Different Meanings

In a non-scientific context, "chlorine" usually refers specifically to the chemical element, but it may also refer to products containing chlorine (like bleach) in everyday language.

Synonyms

• Cl: The chemical symbol for Chlorine.
• Bleach: Often refers to chlorine bleach, a common cleaning product.

Idioms and Phrasal Verbs

While "chlorine" itself does not have any idioms or phrasal verbs associated with it, you might encounter phrases like: - "Chlorine in the pool" can symbolize safety and cleanliness in recreational spaces.

Summary

So, "atomic number 17" is just a scientific way of identifying Chlorine, which is an important element used for cleaning and purifying.

Academic

Noun

1. a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water)

Synonyms

• chlorine
• Cl