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If an atom has 43 electrons and 56 neutrons and 43 protons what is its approximate atomic mass?
Wiki User
∙ 14y ago
Atomic Mass of an element is measured in atomic mass units (amu), and is usually only slightly higher than its atomic mass number (except for elements having many different isotopes). The mass of a neutron is 1.00866 amu and the mass of a proton is 1.00728 amu. The mass of electrons is so insignificant that they are ignored. The atomic mass of an atom with 56 neutrons and 43 protons is (56 x 1.00866 amu) + (43 x 1.00728 amu) = ~99.8 amu.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoThe number of protons is the atomic number of an element, and this is the number that is used to place elements on the periodic table. So, if you look at the Periodic Table for element 104, you will see that it is Rf or Rutherfordium. So that is your answer- Rutherfordium, no matter what the number of neutrons are. However, you could identify the Rutherfordium atom with 157 neutrons as an isotope of Rutherfordium called Rutherfordium-161.
Wiki User
∙ 11y agoElectrons are not counted in atomic mass, but since all elements on the periodic table are balanced, it gives us the number of protons -104. Add the number of protons and neutrons to get atomic mass. The plus one charge is a trick, it doesn't mean an extra proton ( that would give you a different element) it means the loss of an electron which has no effect on mass.
Wiki User
∙ 15y agoRutherfordium (the atom you are reffering to) has an atomic mass of 261 amu. Although you have an isotpe but 261 is still farely accurate for an aproxamation
Wiki User
∙ 14y agoThe atomic mass number is the sum of the numbers of protons and neutrons in an atom, in this instance 99.
Wiki User
∙ 11y agoIf the charge is -1, then the mass number would be 260. If the charge is +1, then the mass number would be 262.
Wiki User
∙ 13y ago104 + 157 = 261
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What must the atomic number also identify?
Atomic Number identifies the following:No. of protons (same as the atomic number)No. of electrons (mostly same as no. of protons)Approximate Atomic Mass (No. of neutrons are roughly equal to or near to no. of protons)
How many protons neutrons electrons atomic number and atomic mass does bromine have?
Protons - 35 Neutrons - 43 Atomic Number - 35 Electrons - 35
How do you get the atomic number and weight?
No. of protons=No. of electrons = Atomic number. No. of protons + No. of neutrons = Atomic mass.
How many protons electrons and neutrons in bromine-80?
79? I'm pretty sure the atomic mass of Bromine is 80. Incase you were wrong, the Atomic mass = Number of protons + Neutrons, which is 80. The atomic number is 35, which is the number of protons. Protons = 35. So the No. of Neutrons = 80 ( protons & neutrons) - 35 (protons) = 45 ( No. of neutrons) and Finally for electrons = the number of protons which is 35.
What can be determined by looking at the atomic number of an element?
the number of protons in an atom and the number of electrons in an atom
What are the number of protons neutrons and electrons in an element?
Number of protons = Number of electrons = Atomic number Number of neutrons = Atomic number - Number of protons
What must the atomic number also identify?
Atomic Number identifies the following:No. of protons (same as the atomic number)No. of electrons (mostly same as no. of protons)Approximate Atomic Mass (No. of neutrons are roughly equal to or near to no. of protons)
Atomic particles located in the nucleus?
Neutrons and protons.
How many protons neutrons and electrons are found in phosphorous?
Phosphorus has an atomic no. of 15 and its atomic mass is 31.=we know,atomic no.=number of protons==also, atomic mass=no.of protons+no. of neutrons==this implies, 31=15+no. of neutrons= 31-15=no. of neutrons= 16=no. of neutrons==also,no. of protons=no, of electrons=so, total no. of protons=15total no. of electrons=15total no. of neutrons=16
What is the number of protons in the necleus?
# of protons = # of electrons # of protons/ electrons + # of neutrons = atomic mass
How many protons neutrons electrons atomic number and atomic mass does bromine have?
Protons - 35 Neutrons - 43 Atomic Number - 35 Electrons - 35
How are protons and neutrons related?
For a stable atom, no. of protons= no. of electrons no of neutrons= Atomic Mass- no. of protons
Where are protons neutrons and electrons located?
Protons, neutrons and electrons are located in the atom. The protons and neutrons are located in the atomic nucleus; the electrons are around the nucleus, arranged in shells.
What is the number of protons electrons and neutrons in n-14?
Nitrogen-14: 7 Protons, 7 Electrons, 7 Neutrons To work this out in the future for other elements: Protons = Atomic Number Electrons = Atomic Number Neutrons = Atomic Mass - Atomic Number Hope this helps!
What are atomic particle's?
They are neutrons, protons and electrons.
How are electrons and protons related?
For a stable atom, no. of protons= no. of electrons no of neutrons= Atomic Mass- no. of protons
What plus what determines the atomic mass?
protons plus neutrons
