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What is the total number of neutrons in the nucleus of a neutral atom that has 19 electrons and da mass number of 39?
Wiki User
∙ 12y ago
The mass number is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus.
Thus add the number of neutrons (20) to the atomic number (which is a count of the number of protons) 19 to give a mass number of 39.
Wiki User
∙ 14y ago
Wiki User
∙ 12y ago# of protons and electrons(being 10 of each p and e) + the # of neutrons ..........don't add the protons and electrons the cancel each other out almost like if there is 5 protons and 5 electrons then you take the number 5 and add to number of nuetrons
protons=(+) electrons=(-) neutrons = are neutral no charge at all
Wiki User
∙ 14y ago9.
Atomic Mass=Number of protons (or) number of electrons + Number of neutrons
Since the number of electrons depend on ionization, number of protons is usually taken to calculate the mass number.
In case of isotopes, the number of protons remain unchanged, but the number of neutrons change, like in the isotopes of hydrogen - Protium, Deutrium etc.
Wiki User
∙ 14y agoatomic number = number of protons
mass number = # protons + # neutrons
# neutrons = mass # - atomic # = 19 - 9
10 neutrons
Wiki User
∙ 14y agoIt's always mass number minus atomic number; in this instance, 10.
Wiki User
∙ 13y ago9, every proton and neuton counts for approxiamately 1. so 19 - 10 = 9
Your element would be Fluorine
Wiki User
∙ 12y agoFluorine. (F)
Wiki User
∙ 7y agoThe number of neutrons is 10.
Wiki User
∙ 12y ago20
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What is the number of electrons and neutrons in fluorine?
In a neutral atom of fluorine, there are 9 electrons. The number of neutrons varies with an isotope's mass number.
What two particles make up the nucleus?
The protons and the neutrons make up the nucleus. The protons are equal to the number of electrons and is also the atomic number of that element.
What are the subatomic particles in silicon?
Silicon has 14 electrons and protons; the number of neutrons is specific for each isotope. Number of neutrons in a silicon isotope = Mass number - 14
If a neutral atom has a mass of 15 amu and an atomic number of 7 whats the number of protons neutrons and electrons in the atom?
The protons is 7, the neutrons is 8, and the electrons is 22.
The atomic number of oxygen is 8 therefore oxygen atoms always contain 8 neutrons?
No. In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom. As electrical charge is always balanced it is also the number of electrons to be found in the electron shells surrounding the atomic nucleus. Neutrons are electrically neutral (they pad out and stabilize the atomic nucleus) and their number in an atomic nucleus can vary, giving rise to the various isotopes of the element. In the case of Oxygen, the main isotopes are: 16O with 8 neutrons 17O with 9 neutrons 18O with 10 neutrons
How do you find the number of electrons in an atom if you know the number of protons and neutrons?
In a neutral atom, the number of electrons is equal to the number of protons of the nucleus.
How many protons neutrons and electrons are in a nitrogen 15?
7 protons , 8 neutrons and 7 electrons in the neutral atom. Nitrogen has an atomic number of 7. The atomic number is the number of protons in the nucleus. In the neutral atom this is also the number of electrons . The "15" in nitrogen-15 is the mass number, the total number of protons and neutrons in the nucleus. Taking 7 from 15 there are therefore 8 neutrons in nitrogen-15.
Oxygen has eight protons in its nucleus. calculate the number of neutrons and electrons in a neutral oxygen 16 atoms?
Oxygen-16 has 8 electrons and 8 neutrons.
How are electrons protons and neutrons positioned within an atom?
Electrons are on the outside rings of an atom. neutrons and protons are together in the nucleus of the atom. There is always the same number of protons and electrons in an atom, equal to the atomic number of the element. The amount of neutrons varies, even between atoms of the same number, these varieties of an element are called isotopes. If the amount of protons and electrons varies, it is called an ion, and the chemical number is still equal to the amount of protons.
What is the negatively charged particle that spins around the center of an atom?
an electron. :) and protons are positively charged and chill out in the Nucleus. The Nucleus also includes Neutrons which are, go figure, Neutral charge. So the negatively charged electrons orbit the Nucleus and inside the nucleus are Protons - positive - and Neutrons - neutral. In fact, what keeps the electrons orbiting is the fact that opposite charges are attracted to one another, so the negatively charged electrons are attracted to the positively charged Nucleus. (the nucleus is positive because it's made up of positive particles - protons - and neutral particles - neutrons - so the overall charge is positive.) :) Hope this helped.
What are the relationship between protons and neutrons in a atom?
The atomic number corresponds to the number of protons in the nucleus of an atom. It also corresponds to the number of electrons in a neutral atom. A neutral atom, you'll recall, is one where the number of electrons equals the number of protons in the nucleus of an atom. We remember that atoms often "loan out" or "borrow" electrons, so the electron count will not always equal the proton count.
Neutral atom with 53 protons in its nucleus would have how many electrons orbiting the nucleus?
For a standard atom, the number of protons, electrons, and neutrons is the same. For example: 2 Protons - 2 Neutrons - 2 Electrons Helium 3 Protons - 3 Neutrons - 3 Electrons Lithium 4 Protons - 4 Neutrons - 4 Electrons Beryllium So... 53 Protons - 53 Neutrons - 53 Electrons Iodine
Do protons circle the nucleus of an atom?
Nuclei of atoms contain protons (+) and neutrons. The electrons (-) circle the nucleus on orbitals, forming the electron cloud. In a balanced or neutral atom, there will be the same number of protons in the nucleus as there are electrons outside of the nucleus. The number of neutrons can vary within the same element; that's how you get isotopes (e.g. Carbon-13 has 6 protons, 6 electrons, and 7 neutrons...The 13 is the atomic mass representing the sum of the protons and neutrons)
What does the atomic number of silicon tell you about number of protons neutrons and electrons?
The atomic number of silicon is 14. This means that a silicon atom has 14 protons in its nucleus, and a neutral silicon atom has 14 electrons. The number of neutrons depends on the particular isotope.
Do all isotopes of an elements have different numbers of electrons?
No. The essence of an isotope is that all isotopes have the same number of protons in the nucleus, and thus the same number of electrons. What varies is the number of neutrons in the nucleus.
What do atoms of the same element have the same number of?
An Isotope has the same number of Protons (and thus electrons in its electrically neutral state) but a different number of Neutrons. Ergo, an element is defined by the number of Protons in its nucleus.
How do the atoms of one isotope differ from those of other isotopes of the same element?
Primarily, isotopes differ in the number of neutrons in the nucleus. Secondarily, because some combinations of protons and neutrons produce an unstable nucleus, they may differ by being radioactive.
