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What To two decimal places what is the relative atomic mass and the molar mass of the element potassium K?
It is 38.96
Why are most atomic masses a decimal?
The atomic mass of an isotope of an element is the mass of the nucleons (neutrons + protons) in an atom of that isotope. This is nearly, though not exactly, equal to the number of nucleons, and so is nearly a whole number.The main cause for the atomic mass being fractional is that most elements have numerous isotopes, each with a different number of neutrons and so a different atomic mass. The atomic mass for an element is the average of the atomic masses of all its isotopes, weighted together in the proportion of the isotopes' abundance on earth. It is this weighting together that results in the numbers being fractional.
What is relative atomic mass and atomic mass amu?
The relative atomic mass was first proposed by John Dalton in 1803. According to it, the mass of an atom was expressed relative to the mass of one 1H atom. The unit was later changed to 1/16 of the mass of an oxygen atom. However, this measure was discarded when 17O and 18O were discovered. In 1961 the basic unit was changed (once again) to 1/12 of the mass of a 12C atom. The mass of any atom or molecule is measured in atomic mass units (AMU) and the units is defined as 1/12 the mass of a 12Carbon atom.
What is a boron number in a atomic number?
what is the boron number in an atomic number/
What is 4.00260 rounded to in atomic mass?
It is 4.0026 : the atomic mass can be a fraction.
What is the relative atomic mass of potassium?
the relative atomic mass for the element potassium is 39.0983
What To two decimal places what is the relative atomic mass and the molar mass of the element potassium K?
It is 38.96
What element has a relative atomic mass of 15.5?
Relative atomic mass, also called atomic weight, is listed on the periodic table for each element. There is no element listed on the periodic table with a relative atomic mass of 15.5.
What is the atomic number for potassium?
Pottasium is a meta element. Atomic number of it is 19.
Which element has an atomic number of 19?
Fluorine is a non metal element. Atomic mass number of it is 19.
What is the atomic number of potassium and sodium?
Potassium is a non metal element. Atomic number of it is 39.
What is the first element in the fourth period?
The first element in the fourth period of the periodic table is potassium with the atomic number 19.
What is atomic number for potassium?
The atomic number of potassium (K) is 19.The atomic weight of K is 30.0983 grams per mole.See the Web Links to the left of this answer for a periodic table with more information about this element!I believe the atomic weight is 39.0983.19
What was the birth atomic number of potassium?
We can find potassium as a non metal element. Atomic number of it is 19.
Which element has the atomic number 19?
Potassium does.
Which chemical element has relative atomic mass of 173?
The chemical element with a relative atomic mass of 173 is Ytterbium (Yb).
What element is know as K?
The element known as K is Potassium. Its atomic number is 19.
