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Atomic Mass '''number''' means the number of protons plus neutrons.

Mass also includes electrons, though those are about 1 /1800th of a proton. If also includes mass equivalant binding energy.

More specifically, atomic mass is a number that represents the mass of the element in its most natural state, taking into account the difference in mass between the proton and the neutron, and considering that most samples include more than one isotope. Atomic mass is normallized to the mass of Carbon-12, so one mole of Carbon-12 has a mass of 12 grams and, for example, one mole of Potassium has a mass of 39.0983 grams.

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13y ago
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3mo ago

Yes, atomic mass is the sum of the number of protons and neutrons in an atom's nucleus. It is typically expressed in atomic mass units (amu).

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Q: Does atomic mass means the number of protons plus neutrons?
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How many neutrons does palladium have?

Palladium has 60 neutrons. It has an atomic number of 46, which means it has 46 protons. To find the number of neutrons, you subtract the atomic number (protons) from the atomic mass (protons + neutrons). Palladium's atomic mass is approximately 106.4, so 106.4 - 46 = 60 neutrons.


If atomic mass of 16 and atomic number of 8 this means the number of neutrons in this type of oxygen is?

The number of neutrons in an atom can be calculated by subtracting the atomic number from the atomic mass. In this case, an atomic mass of 16 and atomic number of 8 for oxygen means there are 8 neutrons (16 - 8 = 8).


How do you determine the number of protons electrons and neutrons present in an element by identifying its atomic and mass numbers from the periodic table?

Atomic number means number of protons present in an atom. Atomic number= number of protons. mass number = number of neutrons+ number of protons. So if you subtract the number of protons you get neutrons and if you subtract neutrons you get protons. mass number - protons= neutrons Mass number - neutrons = protons.


What is the atomic mass of gallium with 39 neutrons?

The atomic mass of an element is the sum of protons and neutrons in its nucleus. Gallium has an atomic number of 31, which means it has 31 protons. If it has 39 neutrons, then its atomic mass would be 31 (protons) + 39 (neutrons) = 70.


Cesium-133 has an atomic number of 55 It has neutrons?

Cesium-133 has an atomic number of 55, which means it has 55 protons in its nucleus. Since the atomic number represents the number of protons, the number of neutrons in an atom of cesium-133 can be calculated by subtracting the atomic number from the atomic mass.


Phosphorus has an atomic mass of 31 and an atomic number of 15 the number of neutrons must be?

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How many protons are represented in an atom which has an atomic number of 9 and an atomis mass of 19?

An atom with an atomic number of 9 means it has 9 protons. The atomic mass of 19 indicates the total number of protons and neutrons in the nucleus, so if the atom has 9 protons, the remaining mass comes from neutrons (19-9=10 neutrons).


Beryllium has a atomic number of four and a atomic mass of 9 beryllium has?

Beryllium has an atomic number of 4, which indicates the number of protons in its nucleus. Its atomic mass of 9 includes the total number of protons and neutrons in its nucleus. This means that beryllium has 4 protons and usually 5 neutrons.


How many proton's neutrons and electrons of Pb are present with a mass number of 207 and an atomic number of 82?

In lead (Pb), the atomic number represents the number of protons, so there are 82 protons since the atomic number is 82. Given the mass number (207), which is the sum of protons and neutrons, subtracting the atomic number from the mass number gives the number of neutrons, which is 207 - 82 = 125 neutrons. In a neutral atom, the number of electrons is equal to the number of protons, so there are 82 electrons in a neutral lead atom with an atomic number of 82.


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