Linked Questions

7
votes
4answers
889 views

Why are there only 7 periods in the periodic table? [duplicate]

Is seven a hard theoretical limit (there can’t be an eighth period) or is it there just because we haven’t discovered/synthesized anything beyond that?
0
votes
3answers
2k views

Why are there only less than 120 elements out there ? [duplicate]

Why stop at 118 , Why aren't any more stable elements possible ?
1
vote
0answers
143 views

Will there ever be a "last element"? [duplicate]

Recently the IUPAC added four new elements to the periodic table and it seems the race for discovering new elements is just getting faster. I was wondering if a "last element" exists; an element with ...
2
votes
0answers
87 views

is there any evidence that there are ~75 extra elements on the periodic table? [duplicate]

there are 118 currently existing elements on the periodic table, and recently I've found like 77 elements that quote on quote "may exist" on our periodic table. Is this true?
1
vote
2answers
328 views

Could we possibly discover new extraterrestrial elements and minerals?

So, after dissolving a good portion of my brain by watching a ton of sci-fi, I started thinking about all of the strange new materials that we will supposedly have in the future. For example, the ever-...
12
votes
1answer
1k views

Is it possible that atoms with 120 protons are possible, but that atoms with 119 protons aren't possible?

We currently know that there are atoms with atomic number up to 118 are possible. Is it possible that atoms with 120 protons are possible, but that atoms with 119 protons aren't possible? Or are ...
0
votes
1answer
254 views

Relativistic effects in element 137 (Feinmanium) and above

Here I saw that if an element above atomic no 137 has to exist, it must have electron speed greater than speed of light. My question is , has this calculation been done keeping in mind Einstein's ...
3
votes
1answer
153 views

What are the consequences of having an element with an atomic number above 137?

In other words, is an element such as Feynmanium the last chemical element that can physically exist on a planet such as Earth?
0
votes
1answer
196 views

What properties of later elements are predicted by scientists? [closed]

Though scientists have predicted up to element 172 (unseptbium) what properties do they predict any elements later on the extended periodic table may have?
0
votes
0answers
29 views

If an atom had 200 protons, how much neutrons would it need to have to be most likely stable and why?

I know there is a specific proton/neutron ratio but i'm unaware if it applies to atoms with 86 protons and beyond.