Home > Yahoo Questions > Your Questions About How To Discover New Elements

Your Questions About How To Discover New Elements

Ken asks…

Who discovered the amount of subatomic particles in Gold?

I don’t want to see any “Gold has been known since ancient times” or “Mendeleev put it on the Periodic Table”. I just want to know who is(are) the person(people) who discovered the inside structure and amount of subatomic particles in Gold!

New Niche Finder answers:

Ernest Rutherford discovered that the atom was composed mostly empty space and a tiny highly positive nucleus. He also discovered the proton in 1919.

A. Van den Broek in a series of two papers proposed that the atomic weight of an element was approximately equal to the charge on an atom. This charge, later termed the atomic number, could be used to number the elements within the periodic table.

Henry Moseley discovered the concept of atomic number in 1914 before any of the particles of the nucleus were discovered.

James Chadwick discovered the neutron in 1932.

There are others who contributed significantly to the discovery of the structure of the nucleus of the atom. Much more history is available in the links below.

Hope this is helpful to you.

Helen asks…

What are some of the interesting natural element discoveries?

If you were to pick one natural element discovery to write a newspaper article about… which one would it be?

New Niche Finder answers:

Helium is the only element first discover out of the Earth!!

(in spectrum of sun) helios is Greek for sun

Sandra asks…

WHO and HOW was SILVER THE ELEMENT DISCOVERED?

Who discovered the Element Silver?
How was the element SILVER discovered?
And i need an idea for what kind of cartoon for it to be a Superhero or a Villain.
I have a project. I searched it up but I couldn’t find anything. PLEASE HELP ME!

New Niche Finder answers:

Some elements have been known since pre-historic times. These include copper, gold, silver, iron, tin, and a few more. The reason: most of these elements are found in “pure” form on the surface of the earth.
Hero or Villain? Well… Depends on whether you’re Fey or not — werewolves, vampires find it poisonous. Fairies find iron poisonous, etc.

Sandy asks…

How are the number of protons and electrons determined in a newly discovered element ?

well simply put together how were they determined for the elements that were discovered ?

New Niche Finder answers:

The number of protons or electrons is also called the atomic number of an atom.

The quest for new elements is usually described using atomic numbers. As of 2010, elements with atomic numbers 1 to 118 have been observed. Synthesis of new elements is accomplished by bombarding target atoms of heavy elements with ions, such that the sum of the atomic numbers of the target and ion elements equals the atomic number of the element being created. In general, the half-life becomes shorter as atomic number increases, though an “island of stability” may exist for undiscovered isotopes with certain numbers of protons and neutrons.

Lisa asks…

How did Mendeleev and Newlands classify the elements?

How did they classify the elements and did evidence prove or disprove their theories?

New Niche Finder answers:

Newlands put them in periods. 8 elements per period. We call it Newlands’ Law of Octaves.

We call it The Law of Octaves because every 8th element would have a common property. Hence, we got groups of similar properties.

However, it wasn’t too great. He didn’t leave gaps for undiscovered elements and he included elements which were metals with non-metals.

Mendeleev then came along and improved things. He LEFT GAPS for undiscovered elements, and where he thought elements didn’t fit. This meant that elements of contrasting properties weren’t occasionally in the same group, unlike what Newlands did.

Not only did leaving gaps prevent the incorrect classification of elements, but it helped us predict the properties of undiscovered elements! If an undiscovered element is in the same group/period as an already discovered element we can predict things about it. Such as: Ionisation energy, properties, atomic mass, atomic number, melting point, structure (metallic, ionic, covalent), etc.

Powered by Yahoo! Answers

I love hearing from you so please post a comment. All I ask is that you contribute to the conversation in a meaningful way. If your comment is unrelated to the post or is solely self-promotional, your comment will not be approved.

Comments are closed.