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Mass number = No. of protons + No. of neutrons = 19 + 20 = 39
Wiki User
∙ 11y ago
Wiki User
∙ 16y agoIf a chlorine atom had 20 neutrons, its mass number would be 37. Chlorine has 17 protons, and the mass number of an atom is found by adding the number of protons of that atom to the number of neutrons for a given isotope. It turns out that the isotope 37Cl is a stable form of chlorine. And this particular isotope of chlorine represents about a quarter of all the naturally occurring chlorine. Got a link to the Wikipedia article on chlorine if ya want it.
Wiki User
∙ 11y agoProtons+Neutrons= Mass #
So
19+20=39
Wiki User
∙ 14y ago39 a.m.u
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An atom with an atomic number of 9 and a mass number of 19 would have an atomic mass of what?
The atomic number of the potassium is 19. So the number of protons and electrons is 19 in the atom of potassium. The number of neutrons can be calculated as mass number minus atomic number. It comes to be 39 minus 19. That is 20.
What is the atomic mass of an atom that contians 19 protons 19 electrons and 20 neutrons?
The atomic mass of the isotope potassium-39 is 38,963 706 68(20).
What is the atomic mass and neutrons are K?
The mass number of Potassium is 39 which means it has 20 neutrons.
How many electrons does a neutral atom of potassuim contain?
The number of neutrons in any element depends on the isotope of the element you are referring to. Potassium has 24 isotopes, ranging from 32K to 55K. The most stable natural isotope is 39K, which would have 20 neutrons.
Explain the difference between atomic mass and atomic number?
What is the mass number of an atom with 19 protons and 20 neutrons?
The element is potassium. Atomic mass is 38.
An atom with an atomic number of 9 and a mass number of 19 would have an atomic mass of what?
The atomic number of the potassium is 19. So the number of protons and electrons is 19 in the atom of potassium. The number of neutrons can be calculated as mass number minus atomic number. It comes to be 39 minus 19. That is 20.
What is the mass number and symbol of an atom that contains 19 protons 19 electrons and 20 neutrons?
The mass number is always the sum of the numbers of protons and neutrons and therefore is 39 in this instance. The atomic number of 19 shows that the atom is of the element potassium, and its symbol is 39K.
What is the atomic mass of an atom that contians 19 protons 19 electrons and 20 neutrons?
The atomic mass of the isotope potassium-39 is 38,963 706 68(20).
How many neutrons are in the nucleus of the potassium?
20 for the stable atom
What is the atomic mass and neutrons are K?
The mass number of Potassium is 39 which means it has 20 neutrons.
How many protons does potassium 39 have?
The mass number, the number that follows the hyphen at the end of an element name, is the sum of the atomic number of the element and the number of neutrons in each atom of the isotope specified by mass number. The atomic number of potassium is 19; therefore, potassium-39 contains (39 - 19) or 20 neutrons.
How many neutrons does potassium have'?
The number of neutrons is entirely dependent on the Mass number of the particular atom. The standard mass for potassium is 39. Potassium is element number 19, so it has 19 protons and 19 electrons in the neutral atom. It has therefore 39-19 = 20 Neutrons.
How many electrons does a neutral atom of potassuim contain?
The number of neutrons in any element depends on the isotope of the element you are referring to. Potassium has 24 isotopes, ranging from 32K to 55K. The most stable natural isotope is 39K, which would have 20 neutrons.
What is the mass number of 10 protons and 10 neutrons?
20. the mass of an atom is determined by the sum of the number of neutrons and protons the atom has.
How many protons electrons and neutrons does an atom of potassium have?
19 protons, 19 electrons, and 20 neutrons
