5= Elemental hydrogen, nitrogen, oxygen, fluorine and chlorine are all gases at room temperature,
A line. You can even check a map
One correct thging is that there are the same amount of positive and negative atoms
<span>The </span>elements are arranged<span> in order of increasing atomic number. Vertical columns(called groups) contain </span>elements with similar properties. Horizontal rows called periods elements with<span> the same number of atomic orbitals(That's why Hydrogen and Helium are separated from the rest of the table).
Hope this helps:)</span>
Answer:
It's compound? It's chemical compound would be represented my letters or numbers
