0
What is the name of the elements that have the atomic number over 95?
Wiki User
∙ 6y ago
All these elements are raidoactive, and will decay with the emission of alpha, beata or gamma radiation.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How many elements in the periodic table are not man made?
92 Today natural elements are considered the elements up to the atomic number 98; but the elements with atomic numbers 43, 61 and 93-98 exist only in extremely traces, as a curiosity in uranium deposits. Of course they can be obtained also by man made nuclear reactions. Consequently man made elements must be considered only the elements with the atomic number over 98: some examples are meitnerium, bohrium, flerovium.
Why does the periodic table has over 110 elements when only 90 occur on earth?
The higher atomic number elements are radioactive and have long since decayed away (assuming they were here to start with).
What is another name for the newly formed isotope?
There isn't another name for isotopes. What it means is Any two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights. There are 275 isotopes of the 81 stable elements, in addition to over 800 radioactive isotopic forms.
Why are elements atomic mass not in strict increasing order in the periodic table?
Elements in the periodic table are arrange by atomic number (number of protons) because various isotopes of elements exist with different atomic masses (atomic mass being determined by the number of neutrons added to the number of protons). The chemical properties are mainly dependent on the electrons, or in some cases the charge of the protons, which is independent of the number of neutrons.
What is the atomic number and symbol for gallium?
Gallium is a meta element. Atomic number of it is 31.
How many elements in the periodic table are not man made?
92 Today natural elements are considered the elements up to the atomic number 98; but the elements with atomic numbers 43, 61 and 93-98 exist only in extremely traces, as a curiosity in uranium deposits. Of course they can be obtained also by man made nuclear reactions. Consequently man made elements must be considered only the elements with the atomic number over 98: some examples are meitnerium, bohrium, flerovium.
Why does the periodic table has over 110 elements when only 90 occur on earth?
The higher atomic number elements are radioactive and have long since decayed away (assuming they were here to start with).
What is another name for the newly formed isotope?
There isn't another name for isotopes. What it means is Any two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights. There are 275 isotopes of the 81 stable elements, in addition to over 800 radioactive isotopic forms.
Why are elements atomic mass not in strict increasing order in the periodic table?
Elements in the periodic table are arrange by atomic number (number of protons) because various isotopes of elements exist with different atomic masses (atomic mass being determined by the number of neutrons added to the number of protons). The chemical properties are mainly dependent on the electrons, or in some cases the charge of the protons, which is independent of the number of neutrons.
What are diifferent between mass number and atomic number?
The atomic number represents the number of protons in the nucleus. It determines what element you're talking about. Numbered from 1 to over 100. The mass number represents the total of protons AND neutrons in the nucleus. It is close to (not the same as) the atomic mass. Isotopes can have different mass numbers but belong to the same element (same atomic number). The number of neutrons (not having a special 'name') varies from 0 to over 150.
What is the atomic number and symbol for gallium?
Gallium is a meta element. Atomic number of it is 31.
What is the symbol for silicon-28?
28/14 Si Its the number they give you which is the atomic mass of the isotope over the atomic number and the symbol of the element.
How atoms of different element differ in their atomic structure?
This may be wrong, I'm not a expert in elements. But here's what I know: A element's atom has a specific number of protons in the nucleus. If you change the number of protons, you change the element. Forgive me if I'm wrong, but I'm only in 5th grade.
How do you determine how many protons are in an element?
Experimentally, I'm not sure, but I know you can look at your periodic chart, the large number over the symbol of each element is teh number of protons in that element.
What is the difference between silver and tin?
Silver and tin are two different elements. Silver has an atomic symbol of Ag and an atomic number (proton number) of 47. It is a lustrous white metal and has the highest thermal conductivity of any metal and electrical conductivity of any element. It is also very ductile and malleable. Tin has an atomic symbol of Sn and an atomic number of 50. It is also ductile and malleable, but oxidizes very easily. As such, it is usually coated over other metals to prevent corrosion.
The number of elements are over 4 or 50 or 100 or 200?
It has about over 100
Changes in the Periodic Table over time?
the periodic table changes by the mass number over the time it changed now by atomic number
