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119 elements
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∙ 11y ago
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What exact date was neon discovered including month and day?
Neon was discovered in September 19, 1898.
When was feverfew discovered?
It is hard to pinpoint an exact date that the feverfew plant was discovered. It has been recorded that this plant was used for medical reasons hundreds of years ago.
What are the essential elements of a cheque?
The essential elements of a cheque include the name of the bank, account payee, payee of whom the cheque is written to, date of the cheque, the payment amount written in words and numbers, serial number of the cheque, the bank state and branch code, and the account number. A signature must be signed at the bottom signature line for the payee to present the cheque.
How many different elements do we know about?
At present (2013) the Periodic Table lists 118 elements in total. A small number of these are not naturally occuring and have only been synthesised under laboratory conditions and only in exceptionally minute quantities. Elements consist of particles called atoms that consist of protons, electrons and optionally neutrons. Protons and neutrons are in the core of the atom, while electrons reside on different energy levels in a cloud around the core. The atomic number of the element is determined by the number of protons in the core. The lightest, simplest element in the universe is hydrogen-1, which consists of one proton and one electron. There are also isotopes (different types) of hydrogen that have one or two neutrons in the core. Since the number of protons defines the element, we can create a different element by adding more protons to the core. To make the new element an atom, we need to add a corresponding number of electrons, since protons are positively and electrons are negatively charged and an atom is always neutrally charged. The more protons and neutrons you add to a core, the bigger it gets. When the core gets bigger, it also gets more unstable. This puts limits to what kind of elements occur in nature and also causes some elements to be radioactive. The number of different elements that are proven to exist is 118, with the largest atom being number 118 (temporary name ununoctium), since element number 119 is yet to be found. As of 2012, 55 hypothetical elements are being created.
When was the emerald first discovered?
no one can really say. the time of the egyptians the incas the Romans but there no exact date
What was the date Saturn was discovered?
there was no date
What date was xenon discovered?
It was discovered in 1898.
What is the date discovered of xenon?
It was discovered in 1898.
When was Vegemite discovered?
1922 was the date that vegemite was discovered
What date was homo erectus discovered?
He was discovered in 1891
Who discovered protactinium and what date did they discovered it?
Protactinium was discovered in 1913 by Fajans and Gohring in Karlsruhe, Germany.
What date was antimatter discovered?
Antimatter was discovered in 1928 by Paul Dirac.
Date copper was discovered?
2013
What date did paramore get discovered?
2005
What is the date that the Aztecs where discovered?
1325
Date mars is discovered?
1609
Date beryllium was discovered?
1798
