C. Protons
Protons are subatomic particles found in the nucleus and carry positive electrical charge.
The answer is 14.
Hope this helps
Yes it is chemical because it's acid rain and other stuff that is warring it out
Answer:
Metalloids, also known as semimetals are elements containing properties similar and midway between metals and nonmetals. They are found to divide the periodic table between the metals on the left and the nonmetals on the right. Metalloids often have the following properties: could be dull or shiny.
Answer: option C. NaCl + LiNO₃ ---> NaNO₃ + LiCl
Explanation:
1) An oxidation-reduction reaction is the oxidation of at least one element and the reduction of at least one element.
2) Oxidation is the increase of the oxidation number, due to the loss of electrons.
3) Reduction is the reduction of the oxidation number, due to the gain of electrons.
4) You can tell whenever a reaction is an oxidation-reduction by observing the oxidation numbers: if two elements changed its oxidation number (one increases and one reduces) it is an oxidation - reduction, else it is not.
5) Oxidation numbers:
i) NaCl
Na: 1+, Cl: 1-.
ii) LiNO₃
Li: 1+, N: 5+, O: 2-
iii) NaNO₃
Na: 1+, N: 5+, O: 2-
iv) LiCl
Li: 1+, Cl: 1-.
There you have that the oxidation numbers of the five elements (Na, N, O, Li, and Cl) remained unchanged.
None element was reduced and none element was oxidized, so you conclude that this is not an oxidation-reduction reaction.
