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ONLY the K+ ion (not element) has 19 protons and 18 electrons.
The isotopic ion with 21 neutrons must be K+-40 , the most rare potassium-ion (0.01%) out of three possibles, the other isotopes are: K+-39 (93%) and 7% is K+-41
Explanation:
39, 40 and 41 are the mass numbers of the 3 naturally occurring potassium isotopes.
Keep in mind that:
1. an element is always neutrally charged, so the number of protons (positives, + ) equals the number of electrons (negatives, - )
2. the number of neutrons depends on the 'mass number' of the one particular isotope of that element and that the number of protons + neutrons is the mass number
What else can I help you with?
How many protons neutrons and electrons in 40 Ar?
18 protons 18 electrons 22 neutrons
How many protons nuetrons and electrons are in argon?
Argon has 18 electrons and protons...Neutrons is 22
What element has 18 protons 20 nuetrons and 18 electrons What is its atomic number?
The element with 18 protons is argon (Ar), with atomic number 18. Its mass number is calculated by adding the protons and neutrons, so 18 protons + 20 neutrons = mass number 38 for this particular isotope of argon.
What is the protons number neutrons number and electrons number in argon?
Protons: 18Neutrons: 18, 20 and 22. Electrons: 18
How many protons neutrons and electrons are in argon 39?
Argon-39 has 18 protons, 21 neutrons, and 18 electrons.
How many protons neutrons and electrons in 40 Ar?
18 protons 18 electrons 22 neutrons
How many protons nutrons and electrons does argon have?
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%
How many neutrons and electrons in the element argon?
Argon has 18 protons, 18 electrons. The most stable isotope of argon (Ar-40) has 22 neutrons.
How many protons nuetrons and electrons are in argon?
Argon has 18 electrons and protons...Neutrons is 22
What element has 18 protons 20 nuetrons and 18 electrons What is its atomic number?
The element with 18 protons is argon (Ar), with atomic number 18. Its mass number is calculated by adding the protons and neutrons, so 18 protons + 20 neutrons = mass number 38 for this particular isotope of argon.
What element 20 protrons 20 neutrons and 18 electrons?
The element with 20 protons, 20 neutrons, and 18 electrons is calcium. Calcium has an atomic number of 20, which tells us the number of protons in the nucleus. The number of protons and electrons should be equal for a neutral atom, therefore in this case the element is calcium.
How many electrons does an element have if it has 17 protons and 18 neutrons?
If an element has 17 protons, it will also have 17 electrons since atoms are electrically neutral. Adding the number of neutrons (18) to the number of protons (17) gives us the mass number of the element, which in this case would be 35.
How many protons neutrons and electrons are in Ar?
18 protons and electrons and 22 neutrons.
What is the protons number neutrons number and electrons number in argon?
Protons: 18Neutrons: 18, 20 and 22. Electrons: 18
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.
How man protons neutrons and electrons does 35Cl- have?
35Cl- has 17 protons, 18 neutrons, and 18 electrons. The negative charge indicates an extra electron compared to the number of protons.
How many protons neutrons and electrons are in argon 39?
Argon-39 has 18 protons, 21 neutrons, and 18 electrons.
