There are! Element 113 is Ununtrium (Uut) and 115 is Ununpentium (Uup). They're just not as well-known as other elements. See the related link listed below for a tabular display and explanation of the periodic table, as of September 17th, 2012.
Yes, element 115 is real and is known as Moscovium. It is a superheavy synthetic element with the atomic number 115 and the symbol 'Mc'. Moscovium was synthesized in a laboratory and is highly unstable, with a very short half-life.
Ununtrium, with the chemical symbol Uut, has the atomic number 113.
Yes, element 115 is real and is known as moscovium. It was officially recognized by the International Union of Pure and Applied Chemistry in 2015. It is a synthetic element that is highly unstable and has a very short half-life.
If you had a stable element 115, then by definition there would need to be at least one non-radioactive isotope. Stable elements are those that have at least one nonradioactive isotope. Of course, the other isotopes of the element could all be radioactive.
Element 115 is Ununpentium, or Uup. It is also known as eka-bismuth. It is a placeholder in the periodic table, and we have not been able to synthesize more than 30 or so atoms of it since 2004. All of its half-lives are very short.
No, 113/115 is a rational number.
2 + 113 = 115.
113 is a prime number. 111 and 115 are composites.
115% is 2% more than 113% . It's also 1.77% greater and bigger.
They are: 113+2 = 115
1, 113 1, 2, 3, 6, 19, 38, 57, 114 1, 5, 23, 115
The median is 115.
None.
The element with an atomic number of 113 is Ununtrium.
112
They are: 103 107 109 and 113
103, 107, 109, 113.