What isotope of iron has 29 neutrons?
Iron-55
Iron-55 (55Fe) is a radioactive isotope of iron with a nucleus containing 26 protons and 29 neutrons.
What is the mass number of potassium that has 20 neutrons?
39
An atom of potassium with 20 neutrons would have a mass number of 39 and thus be an atom of the potassium-39 isotope.
What’s the mass number for iron?
55.845 u
Iron/Atomic mass
What is the mass number of an iron atom that has 28 neutron?
That is every iron nucleus contains 26 protons, 26, massive, positively charged, nuclear particles, by definition. Of course, the nucleus also contains 28 neutrons, 28 neutral, massive nuclear particles, to give the 54Fe isotope, which is about 4% abundant, check on this.
How many neutrons are in iron?
30 neutrons
A neutral iron atom contains 26 protons and 30 neutrons plus 26 electrons in four different shells around the nucleus.
What is mass number of potassium?
39.0983 u
Potassium/Atomic mass
How many protons are present in an atom of potassium 29?
19 protons
19 protons, 20 neutrons and 18 electrons.
What is the mass number of an iron atom that has 28 neutrons?
Of course, the nucleus also contains 28 neutrons, 28 neutral, massive nuclear particles, to give the 54Fe isotope, which is about 4% abundant, check on this.
How many protons and neutrons does potassium have?
Potassium is atomic number 19 on the periodic table. The atomic number is equal to the number of protons. Atomic number 19 = 19 protons. We are told in the question 18 neutrons.
What is the mass number of potassium 19 and 18?
The atomic number is equal to the number of protons. Atomic number 19 = 19 protons. We are told in the question 18 neutrons. Mass number = Protons + Neutrons. Mass number #= 19 + 18#. Mass Number of Potassium = 37amu.
What is the mass number of 26 protons in an iron atom?
Iron’s average atomic mass is 55.845. That rounds to 56. 56 is iron’s mass number. 56 – 26 protons = 30. A typical iron atom has 30 neutrons. Approved by eNotes Editorial Team
How do you find the mass number of potassium?
The mass number of an element is determined by adding the number of protons and neutrons in the atom. Potassium is atomic number 19 on the periodic table. The atomic number is equal to the number of protons. Atomic number 19 = 19 protons. We are told in the question 18 neutrons. Mass number = Protons + Neutrons. Mass number #= 19 + 18#.