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Atomic Mass
Atomic mass is the mass of protons, neutrons, and electrons in a single specific atom.
1,752 Questions
What is the average atomic mass of scandium?
Scandium is a meta element. Atomic mass of it is 45. Atomic number of it is 21.
Aluminium is a non metal element. Atomic mass of it is 26.982.
Can you use the atomic number and atomic mass to calculate the number of each subatomic particle?
atomic number = number of protons = number of electrons
atomic mass = mass of protons + mass of neutrons
How do you figure the atomic mass of element when you have electrons?
The term atomic mass is used only for isotopes; for chemical elements the term atomic weight is recommended.
But atomic masses and atomic weights include also all electrons.
The mass of one mile of a compound is found by adding up the atomic masses of each of the component elements.
A mole of Al2O3 has mass of 2 × 26.98 + 3 × 16.00 = 101.96g
When does the atomic mass of an element represent?
The average total mass of its neutrons,protons and electrons
What is the atomic mass for rutherfordium?
The most stable isotope is rutherfordiun 267; for other isotopes see at: http://en.wikipedia.org/wiki/Rutherfordium
The atomic mass tells the number of?
The atomic weight (not mass) of a chemical element is the ratio between the average mass of the atoms of this element to 1/12 from the atomic mass of carbon-12.
The atomic mass is a term applied only to specific isotopes; the unit is the same as above. Is a value denoting the total mass of all the protons, neutrons, and electrons in an isotope.
The mass number tells us the number (the sum) of protons and neutrons in the nucleus of an atom.
The atomic number, on the other hand, tells us how many protons are in the nucleus of an atom.
IUPAC publish periodically tables of atomic weights - the last edition is from 2009-2010.
For the atomic masses of isotopes the last published edition is The AME 2003 atomic mass evaluation, edited by Audi, Wapstra and Thibault.
The mass number minus the atomic number is .?
The number of neutrons in the nucleus is not the answer its wrong trust me
Mass number = neutrons + protons. Atomic number = protons. Trust yourself to work out the difference.
What is atomic mass of C12H22O11?
Multiply the atomic mass of C (Carbon), which is 12, by its charge (12). multiply the atomic mass of H (hydrogen), which is 1, by its charge (22). multiply the atomic mass of O (Oxygen), which is 16, by its charge (11). Add them together as shown below 12(12) + 22(1) + 11(16) = ? 144 + 22 + 171 = ? 166 + 171= ? Atomic mass = 337
How do you use atomis mass in a sentence?
The atomic mass gives the mass of the atom. It is one of the physical property of the atom.
Which of the following has the minimum atomic mass?
If hydrogen is on the list, it automatically wins.
What information does the atomic mass tells you?
The atomic weight (not mass !) of an element is the weighted average mass of the naturally occurring isotopes.Example: the atomic weight of chlorine is 35.45. Chlorine is naturally composed of chlorine-35 at 75.76% and the rest chlorine-37. Therefore, the mass of any sample must be due to (75.76 x 35 + 24.14 x 37)/100
The mass number of an element is the number of protons and neutrons of that isotope added together. In the above example there were two isotopes, one had a mass number of 35 and the other 37. Chlorine has 17 protons, so it is easy arithmetic to calculate the number of neutrons in each isotope.
lithium is a metal element. Atomic mass of it is 6.941.
What does the atomic mass represent for manganese?
Manganese is a meta element. Atomic mass of it is 25.
What can the atomic mass tell you?
The atomic weight (not mass) of a chemical element is the ratio between the average mass of the atoms of this element to 1/12 from the atomic mass of carbon-12.
The atomic mass is a term applied only to specific isotopes; the unit is the same as above. Is a value denoting the total mass of all the protons, neutrons, and electrons in an isotope.
The mass number tells us the number (the sum) of protons and neutrons in the nucleus of an atom.
The atomic number, on the other hand, tells us how many protons are in the nucleus of an atom.
IUPAC publish periodically tables of atomic weights - the last edition is from 2009-2010.
For the atomic masses of isotopes the last published edition is The AME 2003 atomic mass evaluation, edited by Audi, Wapstra and Thibault.
atomic mass unit is equal to one-twelfth of the mass of a carbon-12 atomic mass is equal to one-twelfth of the mass of a carbon-12
Atomic Mass is equal to the number of protons and neutrons.
What is the atomic mass of einsteinium?
The atomic mass of einsteinium is 252. It is a synthetic element with the symbol Es and atomic number 99.
Which element has largest atomic mass?
The naturally occurring element with the largest mass would be uranium. The largest atomic mass for an artificial element (or any element) would be Ununoctium.
Neutron stars, which are neutrons densely packed together surrounded by a thin layer of degenerate matter could possibly be considered atomic nuclei, though their specific proton count would probably not be measurable.
These, at perhaps 12 miles in diameter, would of course be larger yet.
Atomic mass is found by adding together the individual masses of the numbers of protons, neutrons, and electrons in the atom.
--> Atomic Mass = protons + neutrons
How many neutrons does an atom have if it has an atomic mass of 20 and an atomic number of 45?
The nucleus is where all the mass of the atom is to be found and every nucleus is made of Protons and Neutrons which have about the same mass. Together these therefore give the atom its Mass Number.
Thus if you know the Mass Number you know how many Protons and Neutrons the atom contains. If you are then told how many Neutrons there are, a simple subtraction of this number from the Mass Number will give you the number of Protons.
The number of Protons in an atom defines what is called its "Atomic Number" and this is unique to each element.
You can then look up the Atomic Number in a Periodic Table of the Elements and find out which element has that number.
