The number of protons is equal to their atomic number ever time.
For example: Carbon always has 6 protons
And the number of neutrons depends on whether it is Carbon 12 or 13 or 14 etc.
You can look at the number of valence electrons and look at the size of the molecule itself to determine which element in this certain group is shown on the model.
Answer:
(C) Decomposition reaction
Explanation:
A decomposition reaction is a chemical reaction in which a single compound breaks down into two or more compounds or elements.
<u>in this example </u>
- 2KClO₃(s) ->2KCl (s) + 3O₂ (g)
Potassium chlorate (KClO₃) decomposed to two smaller compounds KCl and O₂ gas.
So, the right choice is (C) Decomposition reaction
Answer:
The chemical formula of potassium oxide is K20
It has 5 digits so the exponent of 10 will be 4:-
61,103 =
6.1103 x 10^4
B
