0
By how many units do that atomic numbers of these two elements differ?
Wiki User
∙ 8y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is the unit of weight for elements?
Atoms are the basic units of elements.
Are the atomic masses of some elements actually fractional?
Atomic mass is not the same as atomic weight. It refers to the weight in amu (atomic mass units ) of a specific isotope. These weights are not whole numbers, the mass of protons and neutrons are slightly different and there is the phenomenon of binding energy of the nucleus which is obseved as a difference in mass (sometimes expressed as the packing fraction). For atomic weights the main reason is that naturally occuring elements consist of mixtures of isotopes.
What 2 elements have the closest atomic mass?
The two elements with the closest atomic mass are Bromine (atomic mass 79.9 amu) and Krypton (atomic mass 83.8 amu). They have a difference of only 3.9 atomic mass units.
What is the atomic mass in Hindi?
The atomic mass (ma) is the mass of a specific isotope, most often expressed in unified atomic mass units.[1] The atomic mass is the total mass of protons, neutrons and electrons in a single atom.[2]The atomic mass is sometimes incorrectly used as a synonym of relative atomic mass, average atomic mass and atomic weight; these differ subtly from the atomic mass. The atomic mass is defined as the mass of an atom, which can only be one isotope at a time and is not an abundance-weighted average as in the case of atomic weight. In the case of many elements that have one dominant isotope the actual numerical similarity/difference between the atomic mass of the most common isotope and the relative atomic mass or standard atomic weights can be very small such that it does not affect most bulk calculations-but such an error can be critical when considering individual atoms. For elements with more than one common isotope the difference even to the most common atomic mass can be half a mass unit or more (e.g. chlorine). The atomic mass of an uncommon isotope can differ from the relative atomic mass or standard atomic weight by several mass units.
What unit is used to meause weighted average atomic mass?
Relative atomic mass (RAM) has no unit, it's just a set of numbers, one for each element
How do isotopes differ and why is the atomic number of elements not a whole number?
Isotopes differ from each other by having different numbers of neutrons but the same number of protons since they are only the same element if they have the same number of protons. Atomic numbers aren't whole because their mass is based of the mass of hydrogen and amu's (atomic mass units) and due to how elements are formed, minute amounts of mass are lost in order to form the nuclear bonds resulting in not whole numbers.
What is the unit of weight for elements?
Atoms are the basic units of elements.
Does Alpha decay results the lighter elements?
Yes, daughter element has atomic number two units less and atomic mass four units less.
What is an elements atomic mass?
it is the total number of protons plus the total number of neutrons expressed in atomic mass units
Do atoms of different elements differ in their weight?
Yes, they do. All elements that are different have different molecular weights.If you will have a look at this periodic table, you can see at the bottom of each box the weight (in Atomic mass units) of each element.http://www.wisegorilla.com/images/chemstry/0-Periodic%20table.gif
What 2 elements have the closest atomic mass?
The two elements with the closest atomic mass are Bromine (atomic mass 79.9 amu) and Krypton (atomic mass 83.8 amu). They have a difference of only 3.9 atomic mass units.
Are the atomic masses of some elements actually fractional?
Atomic mass is not the same as atomic weight. It refers to the weight in amu (atomic mass units ) of a specific isotope. These weights are not whole numbers, the mass of protons and neutrons are slightly different and there is the phenomenon of binding energy of the nucleus which is obseved as a difference in mass (sometimes expressed as the packing fraction). For atomic weights the main reason is that naturally occuring elements consist of mixtures of isotopes.
How does the mass of the neutron and the protons differ?
Proton: 1,007 276 466 77(10) atomic mass units (u) Neutron: 1,008 664 915 6 (6) atomic mass units (u) Electron: 5,485 799 094 3(23).10-4 atomic mass units (u)
What is the atomic mass in Hindi?
The atomic mass (ma) is the mass of a specific isotope, most often expressed in unified atomic mass units.[1] The atomic mass is the total mass of protons, neutrons and electrons in a single atom.[2]The atomic mass is sometimes incorrectly used as a synonym of relative atomic mass, average atomic mass and atomic weight; these differ subtly from the atomic mass. The atomic mass is defined as the mass of an atom, which can only be one isotope at a time and is not an abundance-weighted average as in the case of atomic weight. In the case of many elements that have one dominant isotope the actual numerical similarity/difference between the atomic mass of the most common isotope and the relative atomic mass or standard atomic weights can be very small such that it does not affect most bulk calculations-but such an error can be critical when considering individual atoms. For elements with more than one common isotope the difference even to the most common atomic mass can be half a mass unit or more (e.g. chlorine). The atomic mass of an uncommon isotope can differ from the relative atomic mass or standard atomic weight by several mass units.
What does atomic mass really tell you?
Total count of protons + neutrons. To be really anal, it is an average of the weights of the atomic nuclei of a specific element from the known isotopes of that element. Notice on a periodic chart the naturally occuring elements have weights in fractional (decimal) units, while most synthetic (man-made) elements are integers (whole) numbers as little to nothing is known about their isotopes. Atomic Weight = Atomic Number (proton count) + neutron count
What is the atomic number of an atom with eleven protons and twelve neutrons?
Atomic numbers of atoms always measured by their proton units. Atomic number is equal to proton number. So its is eleven
What unit is used to meause weighted average atomic mass?
Relative atomic mass (RAM) has no unit, it's just a set of numbers, one for each element
