0
These elements (neptunium and heavier) are called transuranic elements or trans-uranium elements. They could also properly be called artificial and radioactive.
*Both plutonium and neptunium, first known through synthesis, have been found to occur naturally in trace amounts, along with americium, curium, berkelium and californium. These occur through a natural version of the synthesis process, within quantities of uranium ore.
What else can I help you with?
How many stable nuclides exist for elements that have and atomic number above 83?
All isotopes of all elements with atomic number similar or greater than 84 are radioactive, and don't have stable nuclei.
Atomic number 148?
The element with atomic number 148 does not exist in nature as elements with atomic numbers above 92 are synthetic and have been created in laboratories. These elements are usually highly unstable and decay quickly.
What is the number above the elements symbol?
The number above an element's symbol in the periodic table represents its atomic number, which indicates the number of protons in the nucleus of an atom of that element. Atomic number determines the element's unique identity and its placement in the periodic table.
How do you find the atomic number of atoms?
Look it up in "Periodic Table of elements" You can find the number of a particular element by looking at the Periodic Table; you can also do this by counting the number of protons in the nucleus.
How do atomic numbers and atomic masses increase in the periodic table?
Atomic numbers increase from left to right across a period on the periodic table. This is because each element in a period has one more proton in its nucleus compared to the element before it. Atomic masses generally increase from left to right as well, but there may be deviations due to isotopes or other factors. Within a group or column, atomic numbers and atomic masses increase from top to bottom as each successive element has more electrons and neutrons than the one above it.
What does elements with a higher atomic number than uranium have?
Elements with a higher atomic number than uranium belong to the transuranium elements, which are all man-made and generally unstable due to their high atomic numbers. These elements typically undergo radioactive decay, leading to the formation of lighter elements.
How many stable nuclides exist for elements that have and atomic number above 83?
All isotopes of all elements with atomic number similar or greater than 84 are radioactive, and don't have stable nuclei.
Atomic number 148?
The element with atomic number 148 does not exist in nature as elements with atomic numbers above 92 are synthetic and have been created in laboratories. These elements are usually highly unstable and decay quickly.
Explain How particle accelerator's are used to synthesize elements with atomic numbers above 95?
IDK whats comin next... So sorry I don't know
The atomic weights of the elements contain fractional amounts because?
all of the above
Where is the atomic number located on the periodic table?
There is no standard position. In the online version produced by the Royal Society of Chemistry, it is underneath the elements' symbols. The Wikipedia table shows atomic numbers above the symbols. So take your pick!
The atomic weights of the elements contain fractional amounts becouse?
the electrons add to the weight ALL THE ABOVE
Synthetic elements are found in what group?
Synthetic elements are found in the group of transuranium elements, which are elements with atomic numbers higher than uranium (92) on the periodic table. These elements are artificially created in a laboratory through nuclear reactions and have unstable nuclei.
What is the number above the elements symbol?
The number above an element's symbol in the periodic table represents its atomic number, which indicates the number of protons in the nucleus of an atom of that element. Atomic number determines the element's unique identity and its placement in the periodic table.
What are the elements that are one atomic number above one one atomic number below your element?
For now I can't recall, except that this ?'n HAS a Valid Answer ... Help Call.
How do you find the atomic number number of an element?
If you look up any element on google.com you will see all the basic information, including the atomic number. Atomic numbers are also given in the periodic table of the elements (which you can also look up on google).
What is the 15 15 15 on fertilizer bags?
The ratio of Nitrogen, Phosphorus and Potassium is what the numbers '15-15-15' indicate on fertilizer bags. That's why such fertilizers often are called 'NPK' fertilizers. That's also why the numbers are called 'NPK' numbers. The letters are the representations of the elements listed above.
