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How many neutrons would be present in the nucleus of an atom of selenium-76?
Wiki User
∙ 12y ago
All selenium atoms have 34 protons, because that is what defines Selenium. The number that comes after an isotope name is the mass number, which is the sum of the protons and neutrons. Because we know the sum of the protons and neutrons, and the number of protons, we can easily deduce the number of neutrons.
p=# of protons n=# of neutrons, and mn=mass number
p+n=mn
n=mn-p
n=(76)-(34)
n=42
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoTwo possibillities, redirected from misspellings in '79Sc':
Either:
- Selenium, Se, atom number 34, mass number 80, (a natural element).
Sc has 34 protons and 46 neutrons. (Isotope Se-79 does not exsist)
Or:
- Scandium, Sc, atom number 21, mass number 41, (a non-natural element).
Sc has 21 protons and 20 neutrons. (no relation with '79')
Or:
- Bromium isotope, Br-79, atom number 35, mass number 79, (50.5% in natural element).
Br-79 has 35 protons and 44 neutrons. (no relation with 'Sc')
Wiki User
∙ 12y ago45
simple subtraction: 79 - 34 = 45
Wiki User
∙ 9y agoA molecule of Selenium-79 has 79 nucleons in it. This is because an isotope's number is based on the mass of the nucleus, defined by its nucleons.
Wiki User
∙ 11y agoThe atomic number of selenium is 34. So there are 34 protons.
Wiki User
∙ 11y agoThe atomic number of Se is 34, so there are 34 protons and 34 electrons
Wiki User
∙ 8y agoHaving many isotopes the mass number is different for each isotope.
The number of protons is 34.
The number of neutrons is 40-48 for natural isotopes.
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Where are protons and neutrins located?
Protons and Neutrons compose the nucleus of the atom. They are surrounded by a cloud of electrons. If our universe was an atom, the sun would be the nucleus (with protons and neutrons) and the orbiting planets would be the electrons.
When you subtract the atomic number from the atomic mass of any element you get what?
Atomic mass= Atomic no. + no. of neutrons So when the atomic no. is subtracted from the atomic mass, the result would be equal to the number of neutrons present in the nucleus of the atom of the element.
Is an electron just a name for both neutrons and protons?
No. Protons and neutrons make up the nucleus of the atom. Electrons orbit the nucleus. The best way to think about an atom is to look at it as a miniature version of our solar system. The nucleus would be the sun (protons and neutrons) and the electrons would be the planets, orbiting around it.
Where would you find a neutron in a atom?
The neutrons of an atom are located in the nucleus (except hydrogen-1 isotope which has no neutrons).
Where in a atom would you find a neutron?
The neutrons of an atom are located in the nucleus (except hydrogen-1 isotope which has no neutrons).
If the chlorine nucleus had twenty neutrons would the charge in the nucleus be greater less or the same?
The neutron has no charge so changing the number of neutrons in the nucleus would not change the charge of the nucleus.
How would you describe the nucleus of sodium?
A nucleus having 11 protons and 12 neutrons is a sodium nucleus, no of neutrons may differ in case of isotopes.
What is the purpose of neutrons?
If a nucleus contained no neutrons, there would only be protons all with a positive charge which would be very unstable. Neutrons help space out the positive charges and bind the nucleus together.
What is inside the nucleus of an atom?
The nucleus of an atom contains neutrons and protons. Almost all of the mass in an atom is made up from the protons and neutrons in the nucleus. Because the nucleus is only made up of protons and neutrons, it is positively charged. Physicists believe that there is a cluster of Protons and Neutrons within an Atom's nucleus. Friend Premier is quite right. So instead saying inside the nucleus it would be apt to say that nucleus is made up of...
Where are protons and neutrins located?
Protons and Neutrons compose the nucleus of the atom. They are surrounded by a cloud of electrons. If our universe was an atom, the sun would be the nucleus (with protons and neutrons) and the orbiting planets would be the electrons.
What is found in a nucleus that has a no charge?
The nucleus of an atom containts protons and neutrons. Protons have a positive charge while neutrons have no charge at all. So your answer would be Neutrons.
What is the center of the atom containing protons and neutrons?
That would be the nucleus.
When you subtract the atomic number from the atomic mass of any element you get what?
Atomic mass= Atomic no. + no. of neutrons So when the atomic no. is subtracted from the atomic mass, the result would be equal to the number of neutrons present in the nucleus of the atom of the element.
What would happened to a stable nucleus in which the number of neutrons suddenly decreased?
The nucleus would become unstable because you need a certain amount of neutrons, electrons, and protons for it to be stable.
What two parts of an atom is located in the nucleus?
Protons and neutrons are in the nucleus, and electrons are in the cloud that surrounds it.
Why is the decay time of free neutrons so much shorter than of bound ones?
When bound inside of a nucleus, the instability of a single neutron to beta decay is balanced against the instability that would be acquired by the nucleus as a whole if an additional proton were to participate in repulsive interactions with the other protons that are already present in the nucleus. As such, although free neutrons are unstable, bound neutrons are not necessarily so. The same reasoning explains why protons, which are stable in empty space, may transform into neutrons when bound inside of a nucleus.
What would happen to the Nucleus without neutrons?
It would not be stable and fall apart.
