Argon Number Of Electrons

Determine the number of electrons. Protons are particles in the nucleus of an atom that have a positive charge equal to +1. Electrons are particles that have a negative charge equal to -1. Therefore, an element in a neutral state will have the same number of protons and electrons.
Dec 30, Argon (Ar) atom Bohr model video using the Periodic Table to determine the number of Protons, neutrons, the Atomic Mass, Atomic Number, number. File:18 argon (Ar) Bohr model.png Bohr Diagrams1) Find your element on the periodic table.2) Determine the number of electrons – it is the same as the atomic number.3) This is how many.
Argon: Element Name: 39.95: Average Atomic Mass: The atomic weight is basically a measurement of the total number of particles in an atom 's nucleus including both protons and neutrons. So the first step is to locate the atomic mass on the periodic table, and round the value to the nearest whole number.
Name: Argon Symbol: Ar Atomic Number: 18 Atomic Mass: 39.948 amu Melting Point:-189.3 °C (83.85 K, -308.74 °F) Boiling Point:-186.0 °C (87.15 K, -302.8 °F) Number of Protons/Electrons: 18 Number of Neutrons: 22 Classification: Noble Gas Crystal Structure: Cubic Density @ 293 K: 1.784 g/cm 3 Color: Colorless Gas Atomic Structure.

Argon Electron Configuration
Argon Number Of Electrons
Argon Number Of Valence Electrons
Argon Element Number Of Electrons

Calculate the number of atoms in 10.0 g of sulfur (molar mass 32.07 g/mol). Write the electron configuration for beryllium, atomic number 4. Write the electron configuration for argon, atomic number 18. Write the electron configuration for nitrogen, atomic number 7. Use the figure above.

Element Argon - Ar

Comprehensive data on the chemical element Argon is provided on this page; including scores of properties, element names in many languages, most known nuclides of Argon. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies.

Argon Menu

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Overview of Argon

Atomic Number: 18
Group: 18
Period: 3
Series: Noble Gasses

Argon's Name in Other Languages

Latin: Argon
Czech: Argon
Croatian: Argon
French: Argon
German: Argon - r
Italian: Argo
Norwegian: Argon
Portuguese: Argônio
Russian: Аргон
Spanish: Argón
Swedish: Argon

Atomic Structure of Argon

Atomic Radius: 0.88Å
Atomic Volume: 28.5cm³/mol
Covalent Radius: 0.98Å
Cross Section (Thermal Neutron Capture)σ_a/barns: 0.675
Crystal Structure: Cubic face centered
Electron Configuration:
1s² 2s²p⁶ 3s²p⁶
Electrons per Energy Level: 2,8,8
Shell Model
Ionic Radius:
Filling Orbital: 3p⁶
Number of Electrons (with no charge): 18
Number of Neutrons (most common/stable nuclide): 22
Number of Protons: 18
Oxidation States: 0
Valence Electrons: 3s²p⁶
Electron Dot Model

Chemical Properties of Argon

Electrochemical Equivalent:
Electron Work Function:
Electronegativity: N/A (Pauling); 3.2 (Allrod Rochow)
Heat of Fusion: 1.188kJ/mol
Incompatibilities:
Ionization Potential
- First: 15.759
- Second: 27.629
- Third: 40.74
Valence Electron Potential (-eV):

Physical Properties of Argon

Atomic Mass Average: 39.948
Boiling Point: 87.45K -185.7°C -302.3°F
Coefficient of lineal thermal expansion/K^-1: N/A
Conductivity
Electrical:
Thermal: 0.0001772 W/cmK
Density: 1.7824g/L @ 273K & 1atm
Description:
Colorless, odorless, tasteless noble gas.
Enthalpy of Fusion: 1.18 kJ/mole
Enthalpy of Vaporization: 6.43 kJ/mole
Flammablity Class:
Freezing Point:see melting point
Heat of Vaporization: 6.447kJ/mol
Melting Point: 83.96K -189.19°C -308.54°F
Molar Volume: 24.2 cm³/mole
Optical Refractive Index: 1.000281
Physical State (at 20°C & 1atm): Gas
Specific Heat: 0.52J/gK

Regulatory / Health

CAS Number
- 7440-37-1
UN/NA ID and ERG Guide Number
- UN1006
RTECS: CF2300000
OSHAPermissible Exposure Limit (PEL)
- No limits set by OSHA
OSHA PEL Vacated 1989
- No limits set by OSHA
NIOSHRecommended Exposure Limit (REL)
- No limits set by NIOSH
Levels In Humans:
Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
- Blood/mg dm^-3: trace
- Bone/p.p.m: nil
- Liver/p.p.m: nil
- Muscle/p.p.m: nil
- Daily Dietary Intake: n/a
- Total Mass In Avg. 70kg human: n/a

Who / Where / When / How

Discoverer: Sir William Ramsey, Lord Baron Rayleigh
Discovery Location: Bristol England (Ramsey)/London England (Rayleigh)
Discovery Year: 1894
Name Origin:
Greek: Argos (inactive).
Abundance of Argon:
- Earth's Crust/p.p.m.: 1.2
- Seawater/p.p.m.: 0.45
- Atmosphere/p.p.m.: 9300
- Sun (Relative to H=1E¹²): 1000000
Sources of Argon:
Argon makes up 1% of the air and is isolated by removing nitrogen, oxygen, carbon dioxide and water from air. Argon is constantly being formed from the radioactive decay of K-40 (an isotope of potassium). of radioactive potassium-40. World wide commercial production is around 700,000 tons per year.
Uses of Argon:
Argon is used for lighting. It may also be used to provide an inert atmosphere for certain projects when explosion or other forms of oxidation may pose a problem. Also used in 'Geiger' counters, which measure radiation levels.
Additional Notes:

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References

A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.

Related Resources

Anatomy of the Atom
Answers many questions regarding the structure of atoms.
Molarity, Molality and Normality
Introduces stoichiometry and explains the differences between molarity, molality and normality.
Molar Mass Calculations and Javascript Calculator
Molar mass calculations are explained and there is a JavaScript calculator to aid calculations.
Chemical Database
This database focuses on the most common chemical compounds used in the home and industry.

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What is the electron configuration of argon?

1 Answer

The electronic configuration of Argon (atomic number is 18) is-

#1s^2 2s^2 2p^6 3s^2 3p^6#

Note:-
For writing the electronic configuration of elements, the Aufbau Principle is used. In Aufbau Principle, the electrons are filled according to the increasing energy level of orbitals.

Argon Electron Configuration

According to the Aufbau Principle, first the atomic number of element is determined (like here oxygen has atomic number 8) and then the electrons are filled in this order-
1s 2s 2p 3s 3p 4s 3d and so on.
.
In 's' orbital, maximum number of filling the electrons is 2.
In 'p' orbital, maximum number of filling the electrons is 6.
In 'd' orbital, maximum number of filling the electrons is 10.
In 'f' orbital, maximum number of filling the electrons is 14.