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Protons minus neutrons doesn't mean anything in chemistry. Protons plus neutrons gives the mass number. Protons minus electrons gives you the charge of an atom(ion). The number of protons are equal to the number of electrons in a neutral atom and the proton number is equivalent to the atomic number.
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Why an atom has no charge even though it contains charged particle?
There are particles within the atom that are charged. Protons have a positive charge, while neutrons have a neutral charge(in other words they have no electrical charge). If you take a look at the website below, the blue circles in the centre represent neutrons, with no charge, and the red circles are protons, with a positive electrical charge. The gray spheres orbiting around the nucleus(centre of the atom with most of the mass) represent electrons, which have a negative charge and weigh about 1/2000 of the mass of a proton/neutron. visitthis site http://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Stylised_Lithium_Atom.svg/180px-Stylised_Lithium_Atom.svg.png
What is the number of neutrons protons and electrons in an atom of zirconium 90 that has no overall charge and an atomic number of forty?
Atomic number gives the number of protons: 40. If the atom is neutral, it must have an equal number of protons and electrons. Therefore, the number of electrons is also 40. The isotope number is the same thing as the atomic mass. Atomic mass is basically the sum of protons and neutrons. Therefore, subtracting the number of protons from the atomic mass yields the number of neutrons: (90 - 40 = 50). Thus, there are 50 neutrons.
If an atom has 35 electrons and its mass number is 80 calculate the number of protons?
In a neutral atom, the number of electrons will be the same as the number of protons. This is because one positive proton will cancel out one negative electron; therefore, if the atom is neutral, it must have the same number of protons and electrons.The number of protons is also the same as the atomic number. For this example, Bromine, with the atomic number of 35, has 35 protons.Bromine:Atomic number- 35Number of protons- 35Number of electrons- 35The mass number is the sum of the atomic number (or number of protons/electrons) and the neutrons. For this example, we know the atomic number (35) + # neutrons = mass number (80). To figure out the number of neutrons, take the mass number and subtract the number of electrons/protons/atomic number. Mass number (80) - atomic number (35) = neutrons (45).
How many electrons are in Cr-52?
There are 24 protons in Chromium (including Chromium54) of any isotope. Isotopes are just elements with different numbers of neutrons. If it is called chromium it has 24 protons. The atomic number of an element is the same as the number of protons.
If an element has 8 protons and 8 neutrons in its nucleus and 8 electrons revolving around the nucleus What is the atomic number and atomic mass of this element?
In neutral atoms (with the same number of protons and electrons), the number of protons and electrons equal the atomic number. If our atom has 9 electrons, is neutral, and therefore has 9 protons, it is element #9: Flourine, which has an atomic mass of 19: 9 protons plus 10 neutrons.
What is the sum of the protons and neutrons and electrons of americium?
The sum of protons and neutrons in an americium atom is determined by its atomic mass number, which is around 243. Americium typically has 95 protons and thus 95 electrons in a neutral atom, as the number of protons and electrons are equal in a neutral atom. Therefore, the sum of protons and neutrons in an americium atom is approximately 243 in most naturally occurring isotopes.
What is the atomic mass of a atom?
The atomic mass of an atom is the total mass of protons, neutrons, and electrons in the atom, measured in atomic mass units (amu). It is approximately equal to the sum of the number of protons and neutrons in the atom's nucleus.
What do atomic number and atomic mass mean?
The atomic number is equal to either the number of electrons or the protons of a particular atom. The atomic mass in a.m.u. is equal to the sum of protons and neutrons in an atom.
Is the atomic number of an element the sum of the protons and electrons in an atom of that element?
Yes, the atomic number of an element is equal to the number of protons in the nucleus of an atom of that element. Since atoms are electrically neutral, the number of protons in an atom is also equal to the number of electrons.
The atomic mass of an atom is equal to the sum of numbers of what?
protons + electrons= atomic mass NUMBER, not the atomic mass.
Which term describes the sum of the number of protons and neutrons in an atom?
when you could check in most of atoms that we have you will see that the sum of protons and electrons equals to or is called the atomic weight or atomic mass...that is if you add protons to electrons you have your atomic mass.
Is there any relationship between atomic mass and number of proteins and electrons?
Yes, there is a relationship between atomic mass and the number of protons and neutrons in an atom. The atomic mass is approximately equal to the sum of the number of protons and neutrons in an atom, as electrons have negligible mass compared to protons and neutrons. The number of electrons in a neutral atom is equal to the number of protons, in order to maintain a balanced charge.
What is the number of protons plus the number of electrons?
The number of protons plus the number of electrons isn't a recognized figure in chemistry. The number of protons is the atomic number of an element. The number of electrons is the same as the number of protons except when the element is an ion. An ionic compound results in one or more electrons moving from one element to another element. Although this is a simplification, it can be described as the atom gaining or losing electrons. The number of protons plus the number of neutrons is the atomic weight of an element.
Is the number of protons within an atom of an electron is equal to its atomic mas?
The number of protons in an atom's nucleus is its atomic number. Each element has its own unique atomic number. An individual atom's atomic mass is the sum of the masses of the protons, neutrons, and electrons in the atom.
Is the mass number the sum of electrons and protons in the atom?
No electrones have no mass
Can you use the mass number of an element to determine the number of electrons in an atom?
No, the mass number of an element is the sum of protons and neutrons in the nucleus. To determine the number of electrons, you would need to know the atomic number of the element, which is equal to the number of protons. Electrons in a neutral atom equal the number of protons.
How many electrons belong to a neutral atom with an atomic mass of 36 amu?
A neutral atom with an atomic mass of 36 amu will have 36 electrons. This is because the atomic mass of an atom is determined by the sum of its protons and neutrons, and in a neutral atom, the number of electrons is equal to the number of protons.
