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The atomic number is the number of protons in an atom's nucleus. Given an Atomic Mass of 201, this information alone does not provide the atomic number as different elements can have the same atomic mass due to isotopes. More specific information about the element is needed to determine the atomic number.

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Related Questions

What is the mass number of Hg?

Mercury is a metal element. Atomic number of it is 80.


What is the atomic mass number of the most common isotope for mercury?

Mercury is a metal element. Mass number of it is 201.


What does the atomic mass describe?

the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.


How many electrons are present in an atom of mercury whose mass atomic number is 80 and whose mass number is 201?

no of electrons in any atom is equal to the atomic number of that element so no of electron is 80


What is the atomic mass of the element mercury?

The atomic mass of mercury is approximately 200.59 grams per mole.


How can the number of neutrons in an atom be determined?

1. Locate the element on the periodic table.2. Find the element’s atomic number (which is the same as the number of protons)3. Find the element’s atomic weight.4. Round off the atomic weight to the nearest whole number to find the atomic mass.5. Subtract the atomic number from the atomic mass (The numbers after the decimal point represent the usually very small mass of the electrons in the atom.)


What element has a mass number of 122 and 72 neutrons?

Mercury (Hg) has an average atomic mass of 200.59. This is an average based on the percentages of the naturally occurring isotopes of Mercury. There is an isotope of Mercury that has 201 particles in the nucleus. Since Mercury's atomic number is 80, Mercury-201 has 80 protons and 121 neutrons in its nucleus.


How many electrons are present in an atom of mercury whose atomic number is 80 and whose mass is 201?

no of electrons in any atom is equal to the atomic number of that element so no of electron is 80


What is the mass of mercury Hg?

The atomic mass of mercury (Hg) is approximately 200.59 grams per mole.


How many protons does thallium-201 have?

Thallium-201 has 81 protons. This is because the number of protons in an atom is equal to its atomic number, and thallium has an atomic number of 81.


How can you tell how many neutrons are in an element?

The number of neutrons in an element is determined by subtracting the atomic number from the atomic mass number rounded to the nearest whole number. On the other hand, very few atoms are abnormal and have a different amount of neutrons than other atoms of the same element. These are called isotopes and are indicated by a number following the element symbol (eg. C-14). This is a radioactive isotope of carbon that has six protons based on the atomic number and two more neutrons than normal--8. (8+6=14). Finally, the reason that the atomic mass units end in decimals is that this is just an average weight. The isotopes can either bring this number up or down. atomic number [ 6 ] symbol [ C ] mass (atomic mass units (amu)) [ 12.01 ]


How many protons and neutrons does thallium-201 have?

Thallium-201 has 81 protons and 120 neutrons. This is determined by the atomic number of thallium (81) indicating the number of protons, and the mass number of thallium-201 (201) indicating the total number of protons and neutrons. Subtraction of the atomic number from the mass number gives the number of neutrons.