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Additional elements have been discovered and added including the synthetic elements. Some of the previously "synthetic" elements have been discovered to be naturally occurring, and have been changed to reflect this. The Atomic Mass calculations have been improved.
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The oldest known elements in the periodic table are the ones with?
the oldest known element in periodic table is copper -8000 years old know element thank you
What is the longest lasting synthetic periodic element?
A good candidate would be curium 247 (247Cm), which has a half-life of 1.56 × 107 years. That's 15,600,000 years (15.6 million years).
What did Mendeleevs periodic table look like?
It looks the same as it did when Mendeleev created it. There are no changes made to the table throughout the years because Mendeleev had predicted the correct placement for all of our current known elements.
What elements name is made up a term that refers to a billion years?
The answer is Gallium Ga stands for giga-ani meaning 'billion years' and is also the periodic symbol for this element.
Who is the founder of the periodic table?
The Russian Chemist, Dmitri Ivanovich Mendeleyev, founded the periodic table. Mendeleyev was the first person to show the similarities and trends in the properties of chemical elements, and he was acknowledged 50 years later when the 101st element was named after him, mendelevium.
What is an example of a change that is slow and periodic fast and non periodic fast and periodic slow and non periodic?
What is your definition of slow? Minutes, years, eons? Some that might do: slow and periodic: the progression of the seasons fast and non-periodic: an explosion fast and periodic: the swing of a pendulum slow and non-periodic: the weathering of rocks.
Why is group 7 of the periodic table known as halogens?
it is what scientists used to use years and years and years and years and years ago.
Why did it take 20 years for chemists to finally accept the periodic table?
Many modifications were done. Finally moseley's periodic table was accepted.
How long did it take to create the periodic table?
it toke 2 years
Which comet appears every 10000 years?
There are no known periodic comets with periods near 10K years.
What is ifsc code for icicibank KK Nagar branch chennai?
It is same as the Ashok Nagar First Avenue Branch. The branch was shifted to KK Nagar more than two years before but the address is not chenged yet in the web site for IFSC code search. The IFSC code ICIC0000077
Will the periodic table always look this way?
In more than 150 years the periodic table had many versions; hundred versions of this table are known. The sole official table is today the IUPAC Periodic Table.
The oldest known elements in the periodic table are the ones with?
the oldest known element in periodic table is copper -8000 years old know element thank you
Will the periodic table always look the same?
No, because as the days and years go past, more scientists will find out more information on the periodic table. When they find out information on the periodic table, sometimes new elements are found, adding new elements on the periodic table causes it to change.
How is the periodic table going to change in the next 50 years?
it changes because you 50 years in 2013 it will change you will see
What is radon's standard state?
Radon is a noble gas (non-metal) in the periodic table so it appears in the atmosphere as radioactive gas with a quantity of about 0.01%. the standard state of Radon is gas in atmosphere so it is placed in periodic table as gas...the gas exist since billion of years and history of periodic table is thousands of years....
How many years after Robert boyle did it take scientists to formulate the periodic table of elements?
224 years...you go to VERITAS don't you?
