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Why does technetium not naturally occur on earth?
A small amount of technetium is now in our earths environment, this is due to: - Nuclear bombs - Nuclear testing - Nuclear Accidents eg the Chernobyl disaster this is where technetium come from in small amounts in our environment. - There is additionally technetium present quite abundantly (up to about 5%) in nuclear reactor waste, and a small amount of this has escaped to the environment. - And finally, technetium is naturally present in our environment, but only in really tiny quantities in uranium ore. One tonne of a high grade uranium ore might typically contain 0.1 to 0.2 micrograms of technetium, which can be detected by its radiation signal. A very small proportion of natural uranium atoms undergo spontaneous fission (break in half) in the natural environment, and technetium is a likely product.
Where has the technetium come from in the environment today?
technetium may not be natrualy produced but it can still be found in small amounts in the environment. it comes in very small amounts. it can only come from where a nuclear explosion has ocoured, after the nuclear explosion technetium is left behind. but it will not last very long because of its short half life and so will be gone in a short amount of time. the main kinds of explosions that cause technetuim to be in the natural environment would be things such as, nuclear power stations exploding. although now a days this is very rare there have been few explsions, but you may also find it where a neclear bomb has been exploded.
What family does technetium come from?
Technetium is placed in the group 7 (manganese group) of the periodic table.
Do the radioisotopes of technetium come naturally?
Only traces of natural technetium exist in uranium deposits. Tc is considered in weighing amounts as an artificial element.
Where does the word technetium come from?
In the Greek language the meaning of technetos is artificial.
Where does technetium come in the periodic table?
Technetium is placed in the group 7 (manganese group) and period 5 of the periodic table of Mendeleev. The atomic number is 43.
What is the past tense for the worlds come out?
The worlds came out.
Where has technetium come from?
Technetium is an artificial chemical element and is extracted from fission products, also prepared by neutron activation or by irradiation in particles accelerators.
Where does the name technetium come from?
The name "technetium" comes from the Greek word "technetos," meaning "artificial" or "man-made." This name was given to the element because technetium is the first element to be artificially produced in a laboratory rather than being found naturally in the Earth's crust.
What is the present form of come?
I/you/we/they come. He/she/it comes. The present participle is coming.
What is the present perfect tense of come?
The present perfect of 'come' is have come / has come.Ex: They have come to visit. She has come to see you in your new apartment.
Where does the small amount of technetium from the earth come from?
Two causes are possible: - spontaneous fission of uranium - a reaction (n, gamma) of molybdenum
