It's simple.
the number of protons in an atom never changes. And also, the no of protons is its atomic number.if you look up the periodic table, you will find a number on the top - left corner of each of the boxes. This is the atomic number.No 2 same elements on the periodic table have the same atomic number. So, all you have to do is search for a box that has the number 13 on it.
and by the way ... the element which you're searching for is Aluminium
Endo is more in reactants and exo is more in products because in exothermic reactions heat is released
Answer:
Humans, micro organisms,and so on
Answer:
Es Vendeis o puedes poner vendes
Explanation:
Because they don’t have charges
