Answer:
Explanation
Explanation:
The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods
If iron (Fe) gained a proton it would become cobalt (CO).
Answer:
R.F.M of Iron (II) oxide :

Moles :

Molecules :

Answer: C9H11O3N
Explanation:
The percentage by mass of each element is divided by its relative atomic mass. The lowest ratio is now observed. Each ratio is now divided by this lowest ratio and approximated to whole numbers. All these are shown in detail in the image attached.
<span>Kr> Br> As> Se> Ge> Ca> Ga > K </span>