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Your Questions About How To Discover New Elements

Steven asks…

How many elements are in the periodic table?

I need this answered for extra credit in biology.

How many elements are in the periodic table currently?
Please include the link where you got this information from.
Thank you!

New Niche Finder answers:

Currently 117, but this number can change in the future if we discover other elements. 118 is not correct because the hypothetical element 117 Ununseptium has not been discovered yet and is just a temporary name given to the element ‘until’ it gets discovered. If you think this is a trick question then you probably want to answer 117, but if you think it’s supposed to be taken literally, answer 118. Maybe you can say both and explain that while 117 hasn’t been discovered yet, it is technically on the table. Maybe your teacher will be impressed with your thoroughness and give even more extra credit!

Lizzie asks…

How does spectroscopy tell us what elements make up distant galaxies, nebulae and stars?

How does spectroscopy tell us what elements make up distant galaxies, nebulae and stars?

I find this very hard so please answer in simple language if possible but with detail.

Thanks peoples :)

New Niche Finder answers:

Just like you have fingerprints…each element has it’s own “fingerprint” that it leaves when it’s light passes through a spectroscope. So by measuring it against elements which we do already know about, and knowing what print (how the light is bent and split up when passing through the spectroscope), they can tell whether it’s an earthly element, or a newly discovered element…just like they’d do a fingerprint match-up when they find fingerprints.

Just think about the different colors you’d see when the light passes through a prism, and how it would be split up. How much yellow, how much red, how much blue etc. Now if you store that data, and know how each element’s light gets split up…then you can match them up by looking at these stars through such a spectroscope and seeing what footprint/fingerprint they leave and comparing it with your database.

Is this clear enough?

Chris asks…

A chemist synthesizes a new noble gas…predict the atomic number of this newly discovered element?

A chemist synthesizes a new noble gas in her laboratory. Use the periodic table to predict the atomic number of this newly discovered element.

At first I was thinking 118, but thats already been discovered.
Is the answer 139?

10 pts for answer
149* not 139

New Niche Finder answers:

134 i believe

Ruth asks…

Account for the relevence of carbon-14s half life in the carbon dating technique.?

Also, if anyone knows the reason for the places that recently discovered elements have on the periodic table then that would be fantastic!! Thanks in advance and please write an answer even if you think it has been said and dont be afraid to use long explanations for your answers 😛

New Niche Finder answers:

The carbon dating technique owes its usefulness to the C14 half life.
Since the half life is known, and the element(s) formed during the normal decay of C14 are also known, then an analysis of the amount of those degradation elements present is directly proportional to the age.

David asks…

you discover a new element and find out that in its nucleus this atom has 14 positive charged particles and 10?

you discover a new element and find out that in its nucleus this atom has 14 positive charged particles and 10 uncharged particles, list its atomic number, atomic mass, and number of each of its 3 main parts? what type of bond do you expect this atom to make and why?

New Niche Finder answers:

Not a new element, just an isotope of silicon. One that exists, with a half life of 140 ms

You already have the information, 14 protons, 14 electrons, 10 neutrons
atomic mass 24 (actually 24.011546)

Bonds: same as silicon

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