The element with atomic number 119 is a theoretical element and hasn't been observed. However, it does still have an IUPAC systematic placeholder name; which is Ununennium (Uue). Only one attempt has ever been made to make this element. That was in 1985, when Calcium-48 ions were bombarded at Einsteinium-254. It was a failure. If it were to be discovered, it would be the first element of period 8 and would probably fit in under Francium.
There are many such elements.
Calcium. I know because I studied chemistry.
Cadmium is highly toxic. Iridium is used as a catalyst in the production of acetic acid.
Elements in the middle of the periodic table are metals, and they are probably best categorized as transition elements.
elements that is soft and easy to cut cleanly with a knife likely to be metal or a nonmetal
"Element-logy" likely refers to the study of elements, which belong to the periodic table of elements. Elements are substances that cannot be broken down into simpler components and are represented by a unique chemical symbol.
Computer Model
Nobel gasses.
Neon (Ne) and Helium (He)
Most likely helium, an element on the Periodic Table of Elements.
metallic
Element A and element B are the most likely to have similar properties because they belong in the same family, because if you know an element's family you can tell the number of valance electrons and the elements they react with. In periods, the properties are not alike, they slowly change in a pattern.
The most reactive elements are alkali metals and halogens.
Since that was a supernova explosion, that would most likely produce all elements that occur naturally, except hydrogen (element #1).
Most likely, this is Potassium's (K) atomic number.
No. A metal spoon is most likely made out of stainless steel, which is a complex group of elements.
There are many such elements.