There are 3 Isotopes with the following mass numbers:
Argon 36
Argon 38
Argon 40
Argon has an atomic number of 18 (it therefore has 18 protons in its nucleus and 18 electrons flying round it). To get the number of neutrons one subtracts the atomic number from the mass number. This means that some Argon atoms have
18 neutrons, some
20 neutrons and some
22 neutrons
the isotope with 22 neutrons is the most common and forms 99.6% of all Argon.
2
18 neutrons.
Argon has 18 electrons.
Argon has 17% by volume
There are 18 electrons and protons each in argon atoms.
mercury has 121 nutrons because the periodic table
18 protons and 22 neutrons in the most commonly occurring isotope argon-40. In argon-36 there are 18 neutrons but this isotope is only present in nature at 0.34%
Not sure about nutrons, but xenon has between 70 and 82 neutrons.
188
2
18 neutrons.
Typically, 69. However it can vary by isotope.
7 is most common. It can also be 6 or 8.
Argon has 18 electrons.
Sodium-23 the only isotope occuring in nature has 12 neutrons
Argon has 18 electrons.
Argon has 17% by volume