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Isotopes
Isotopes are atoms that have different number of neutrons, so they have a different mass number than the other atoms in an element.
1,075 Questions
What is isotopes of an element?
Isotopes are atoms with the similar number of protons, electrons and differed number of neutrons. Because of similar number of protons and electrons and they show similarities in chemical behavior. As they have different number of neutrons hence they show differed physical properties.
Which isotope you would find in greatest abundance for phosphorus?
P-31 accounts for all of phosphorus so I guess that is the one is greatest abundance.
Which of argon's three isotopes is most abundant in nature argon-36 argon-38 or argon-40?
According to wikipedia, argon has 24 known isotopes. 40Ar is most abundant at about 99.6% of natural argon.
Why do isotope have the same chemical properties?
Isotopes of an element have the same number of protons, which determines the element's chemical properties. The differing number of neutrons in isotopes does not significantly affect the element's chemical behavior.
What is the Springfield Isotope mascot in The Simpsons?
Apart from Homer having a brief stint as mascot, the Topes haven't got a team mascot. Many fans sport hats with an atom logo on it. Chances are, the team's shocking record means they have no money to spend on frivolities such as mascots.
How do scientists use the halflife of radioactive isotopes to date rocks and fossils?
The basic idea is to compare the abundance of a naturally occurring radioactive isotope within a material to the abundance of its decay products; it is known how fast the radioactive isotope decays.
How do you figure out the number of protons neutrons and electrons in ions and isotopes?
In general, there are two defining numbers for all elements and their isotopes: the mass number, and the atomic number. These are usually denoted as follows when an element is written:
AZ X
where A is the mass number, Z is the atomic number, and X is the symbol for the element in question (note that the A and Z would normally be aligned, not offset). The mass number, A, is the sum of the protons and neutrons in the element. The atomic number, Z, is the number of protons only. On the periodic table, elements are arranged by atomic number. In this case we see that Carbon is element 6, and so it had 6 protons. The number of neutrons alone can be easily calculated by subtracting the atomic number from the mass number, so that
N=A-Z
where N is the number of neutrons. The number of electrons in a given element, isotope, or ion, can be easily determined as well. In neutral isotopes, the number of negatively-charged electrons must balance the number of positively-charged protons. Since the number of protons is given to us by the atomic number Z, this must also be the number of electrons. In ions, the plus or minus charge denoted tells us the overall charge of the species in question, and thus the lack or excess of electrons. A species with a +2 charge would have two less electrons than expected, while a -1 charge would mean one excess electron.
What isotope has seven neutrons?
Carbon-13 has seven neutrons. It's rare, and is only 1% of all carbon atoms. Carbon has 6 protons, and usually 6 neutrons, however an extra neutron makes the mass of this isotope 13 amu or g/mol, hence its name.
Why do all isotopes of an element act the same way when they are different?
- the electron configuration is the same
- the number of valence electrons is the same
What is the carbon isotope called that has six protons and seven nuetrons in its nucleus?
Carbon thirteen … C13
How can the researcher change one isotope into a different isotope of the same element?
By striking it with neutrons.
All isotopes of hydrogen have 1 proton and 1 electron; the isotope H-1 (protium) hasn't a neutron. the mass is 1.
Other isotopes are:
- H-2 (deuterium): 1 p, 1n, 1e; mass 2.
- H-3: 1 p, 2n, 1e; mass 3.
- H-4: 1 p, 3n, 1e; mass 4.
- H-5: 1 p, 4n, 1e; mass 5.
- H-6: 1 p, 5n, 1e; mass 6.
- H-7: 1 p, 6n, 1e; mass 7.
H-1, H-2 and H-3 are natural isotopes; H-1 and H-2 are stable isotopes.
Isotopes from H-3 to H-7 are radioactive and unstable.
Why do individual isotopes not appear on the periodic table?
In the periodic table only the chemical elements appear; but tables for isotopes also exist.
What is the average mass of an element with isotopes a b and c?
a*% abundace + b*%abundance + c*%abundance
The half-life of carbon-14 is 5 730 years.
Isotopes are atoms of the same element but with a different number of neutrons.
What has 34 protons and 45 neutrons?
Selenium-79 is a radioisotope of selenium containing 34 protons and 45 neutrons.
What is the most harmful isotope of Radon?
Radon-222 is the most harmful isotope of radon. It is radioactive and decays into other radioactive elements called radon progeny, which can attach to dust particles and be inhaled, increasing the risk of lung cancer.
