18 represents the atomic number for Argon. It is the number of protons and of electrons in an argon atom and defines its position in the Periodic Table.
18
The given Roman numerals represent 2000 and 18 respectively
Nine is HCF of 18 and 27
You represent a repeating number by putting a dash on top of the number. For example 56.1066666 you represent it by putting a dash on top of the 6
Argon is an element. It gets its name from Greek and means "inactive". It is designated by the symbol Ar and has an atomic number of 18. It is also one of the noble gases.
That depends on the isotope, as Argon has three different stable isotopes and many different radioactive isotopes.
Argon (Ar)
The element with atomic number 18 is Argon. It is a noble gas with the symbol Ar.
Argon is the 18th element in the periodic table. It is a noble gas with the atomic number 18 and symbol Ar.
Atomic number 18: argon (Ar)
18 protons and 18 neutrons
The chemical formula for argon is Ar. It is a noble gas with an atomic number of 18.
The atomic number of argon is 18. It is a noble gas with the symbol Ar and is found in group 18 of the periodic table.
18
The chemical symbol for Argon is Ar. It is a noble gas with atomic number 18.
Argon has three naturally occurring isotopes: ^{36}{18}Ar, ^{38}{18}Ar, and ^{40}_{18}Ar.
The formula for argon gas is Ar. It is a noble gas with atomic number 18 and is commonly found in Earth's atmosphere.