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3 years ago

The number of electrons in the outermost principal energy level of a chlorine atom is

Chemistry

1 answer:

Hitman42 [59]3 years ago

5 0

Answer:

seven electrons

Explanation:

Chlorine is present in group seventeen of periodic table. It is halogen element. All halogens have seven electrons in outer most valance shell.

The require only one electron to gain the stable electronic configuration or to complete the octet.

Electronic configuration of chlorine:

Cl₁₇ = 1s² 2s² 2p⁶ 3s² 3p⁵

Abbreviated electronic configuration:

Cl₁₇ = [Ne] 3s² 3p⁵

Properties of chlorine:

1. it is greenish-yellow irritating gas.

2. its melting point is 172.2 K

3. its boiling point is 238.6 K

4. it is disinfectant and can kill the bacteria.

5. it is also used in manufacturing of paper, paints and textile industries.

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3 years ago

An isotope has 15 protons, 16 neutrons, and 15 electrons. What is the isotopic notation of the isotope

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Answer:

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Explanation:

The isotope notation is:

$^a_bX$

<em>Where a is the mass number = Number of protons + Number of neutrons</em>

<em>b is atomic number = Number of protons</em>

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$^a_bP$

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3 years ago

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Alex_Xolod [135]

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3 years ago

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