Bohrs model says that electrons move in fixed shells (which have fixed distances) around the nucleus of an atom.
A.
Proteins → RNA → DNA
I think..
<span>Hope this helps. c:</span>
The periodic table is one of the most important tools in the history of chemistry. It describes the atomic properties of every known chemical element in a concise format, including the atomic number, atomic mass and relationships between the elements. Elements with similar chemical properties are arranged in columns in the periodic table.
The table thus is a quick reference as to what elements may behave the same chemically or which may have similar weights or atomic structures.
Hope this answer helps you
Because they're not confident enough to confirm it's indeed true but they will support it for they believe it's correct.
