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Different elements have between 0 and 10 naturally occurring isotopes, and between about 3 and 25 if you also include artificially prepared and characterized ones.
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Are isotopes called tracer elements?
Yes, isotopes are also tracer elements since most modern disease detection techniques involves the subjects ingesting a small amount of radioactive tracers and detect such things as tumors via x-ray or photographic emulsion techniques. In fact, most tracer elements are isotopes.
Which lanthanide element and which transition element have only radioactive isotopes?
All or almost all elements have radioactive isotopes if artificial isotopes are included. Among the naturally occurring elements, uranium, polonium, radium, and thorium have naturally occurring radioactive isotopes on earth.
Which alkali metal element has no stable isotopes?
Elements with no stable isotopes include technetium (element 43) and promethium (element 61) and all elements heavier than lead (elements 83 and higher). Bismuth, element 83, is virtually stable with an extremely long half life of 1.9 x 1019 years.
What is the average atomic mass of X when X has four isotopes?
There are multiple elements of the Periodic Table which have 4 isotopes. These are further broken down into three which have unstable isotopes, and 6 that do not decay. The 6 that are stable are strontium (Sr), lead (Pb), cerium (Ce), iron (Fe), chromium (Cr) and sulphur (S).
What particles are isotopes of each other?
== == Atoms of the same element with different number of neutrons are called isotopes. See related links below for more information.
Are isotopes called tracer elements?
Yes, isotopes are also tracer elements since most modern disease detection techniques involves the subjects ingesting a small amount of radioactive tracers and detect such things as tumors via x-ray or photographic emulsion techniques. In fact, most tracer elements are isotopes.
Are Isotopes also called tracer elements?
Yes, isotopes are also tracer elements since most modern disease detection techniques involves the subjects ingesting a small amount of radioactive tracers and detect such things as tumors via x-ray or photographic emulsion techniques. In fact, most tracer elements are isotopes.
Which lanthanide element and which transition element have only radioactive isotopes?
All or almost all elements have radioactive isotopes if artificial isotopes are included. Among the naturally occurring elements, uranium, polonium, radium, and thorium have naturally occurring radioactive isotopes on earth.
Which alkali metal element has no stable isotopes?
Elements with no stable isotopes include technetium (element 43) and promethium (element 61) and all elements heavier than lead (elements 83 and higher). Bismuth, element 83, is virtually stable with an extremely long half life of 1.9 x 1019 years.
What is the average atomic mass of X when X has four isotopes?
There are multiple elements of the Periodic Table which have 4 isotopes. These are further broken down into three which have unstable isotopes, and 6 that do not decay. The 6 that are stable are strontium (Sr), lead (Pb), cerium (Ce), iron (Fe), chromium (Cr) and sulphur (S).
Which of these pairs of elements have the same number of valence electrons?
It is not possible to say for certain which pair of the isotopes below are of the same element as no options have been provided. There are many different pairs of isotopes that make up many different elements.
What particles are isotopes of each other?
== == Atoms of the same element with different number of neutrons are called isotopes. See related links below for more information.
Is the atomic mass of an element the average mass of the element calculated by addition of the masses all isotopes and division of the sum obtained to the number of isotopes?
For chemical elements the correct words are atomic weight; for isotopes the correct words are atomic mass.The atomic weight is calculated taking into account the atomic masses of the natural isotopes, for a given element, and the percentage of these elements.The formula is:atomic weight = massa x fracta + massb x fractb + .... + massn + fractnFract is the fraction of the isotope.
Do x-rays contain radioactive isotopes?
no
What is the relationship between two elements X and Y whose atomic numbers are 18 and 20 respectively but their mass numbers remain same as 40?
Elements X and Y with atomic numbers 18 and 20, respectively, are argon (Ar) and calcium (Ca). Despite having the same mass number of 40, they are different elements because they have different numbers of protons in their nuclei; argon has 18 protons, while calcium has 20. The fact that their mass numbers are the same suggests they can exist as isotopes or in a specific isotopic form under certain conditions, but in this case, they are simply different elements with different properties.
How many subsets of three elements each can be made from a set of five elements?
(5 x 4 x 3)/(3 x 2) = 10
How many atoms are there in a mixture of two elements?
The number of atoms in a mixture of two elements depends on the amount of each element present. You can calculate the number of atoms by using Avogadro's number (6.022 x 10^23 atoms/mole) and the chemical formula and quantities of each element in the mixture.
