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Why aren't electrons included in the calculations of atomic mass?
Wiki User
∙ 16y ago
A neutron has a weight of 1.674927 x 10-24 gram. A proton has a mass of 1.672622 x 10-24 grams. Protons and neutrons can also be said to weigh 1 Atomic Mass unit (amu). An electron is only 1/1836 of the weight of a proton (1 amu) and so its mass is usually ignored in the calculation of atomic mass.
Wiki User
∙ 16y ago
Wiki User
∙ 14y agoBecause electrons make up around 0.0005% of the mass of any given atom, usually a lot less. Because most masses are only given to about the fifth significant figure (and even then, only sometimes) the electrons' masses do not make enough of a difference to matter.
Wiki User
∙ 13y agoProtons and neutrons have masses which are extremely small but the electron's mass
is 10000 times smaller than that of a proton and neutron. Therefore, it's mass is neglected
with respect to their masses and is not counted while calculating the atomic mass.
Wiki User
∙ 11y agobecause of many purposes the number of the atomic mass would be too high since their are isotopes in the atomic mass. i hope u love it enjoy boo thang:)
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The external shell of electrons is full.
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No idiot arent you payin attention
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The external shell of electrons is full.
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Sugar and molasses are not included in a food group because they are carbohydrates and carbohydrates are not included in food groupsI THINK
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Electrons. Electrons are also made up of quarks but you dont have to go that far if you arent in an advanced class.
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if you arent given the atomic numbert for an element - where could you find it?
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No, they arent. Valence electrons are the amount of electrons the element has in its outermost shell. Electrons dont bond, they can either be shared or transferred. An ionic bond transfers electrons and a covalent bond shares electrons.
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they arent moving freely. they are loosely bound to the nucleus.
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In modern periodic tables, they arent; in order to find the number of neutrons in an atom you must subtract the atomic number (the number of protons) from the atomic mass (rounded to the nearest whole number). In older ones (from the 1930s), neutrons are listed as Element 0, but outside of very extreme environments (specifically, the core of a neutron star), that element simply does not exist, so it's no longer on the table.
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Why arent plastic degradble
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There arent any. There arent any. There arent any.
