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This atoms has an atomic number of 18 and an Atomic Mass of 38.

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7y ago

This atom is the isotope argon-38.

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Q: An atom has 18 protons 18 electrons and 20 neutrons. This atom has?
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Related questions

An atom has what number of protons and electrons?

9 protons and 10 neutrons in F-19 isotope.


An atom has 15 protons and 18 neutrons How many electrons does it have?

If the atom is neutral, then it will have 15 electrons to balance the 15 protons.


How many neutrons are in the nucleus of an atom of argon-42?

Neutrons = 24 Protons = 18 Electrons = 18


How many neutrons are in the atom of oxygen -18?

8


How many protons neutrons and electrons in 40 Ar?

18 protons 18 electrons 22 neutrons


Which of the has an electric charge?

(a) a sodium atom with 11 protons, 11 electrons, and 12 neutrons (b) a calcium atom with 20 protons, 18 electrons, and 20 neutrons (c) a helium atom with 2 protons, 2 electrons, and 2 neutrons (d) an iron atom with 26 protons, 26 electrons, and 30 neutrons


How many electrons does a chlorine atom have if it has 17 protons and 18 neutrons?

17 electrons. The number of protons and electrons is always the same.


What element has 18 neutrons in its atom?

There are several. However, Chlorine is one. Chlorine-35 has 17 protons, 18 neutrons and 17 electrons in its isotopic atom. However, Chlorine-37 has 17 protons, 20 neutrons and 17 electrons in its isotopic atom.


What is the mass of an atom with 17 protons 18 neutrons and 17 electrons?

35 (amu)


How many protons and electrons does chlorine have?

Chlorine has: 17 Protons 17 Electrons (in a neutral atom i.e. not an ion) (Isotope Mass Number - 17) is the number of Neutrons.


How many protons neutrons and electrons are in Ar?

18 protons and electrons and 22 neutrons.


What is the difference between an oxygen 16 atom and an oxygen 18 atom?

In the nucleus of an oxygen-18 atom there are 10 neutrons while in the nucleus of an oxygen-16 atom there are only 8 neutrons. The number of electrons and protons always stay the same.