Answer:
If you are creating the reaction, then you would agitate the particles to cause them to become more active.
Explanation:
This can be done by stirring them, heating them up, or by swirling the container.
id say its C mechanical energy making the wheels turn.
Answer:
a) the element belongs to group 2
b) see image attached
c) Magnesium
d) X3N2
Explanation:
Any ion with the formula X^2+ was derived from group 2 elements. The group two element found in period 3 is magnesium alone.
Since the nitride ion has a valency of -3 and X^2+ has a valency of +2 , then a compound formed between X^2+ and the nitride ion will have the formula X3N2.
Carbon needs four more valence electrons, or a total of eight valence electrons, to fill its outer energy level.
<span>quartz (SiO2) is a compound. A compud is the combination of two or more elements. It is a compound because three elements are formed, the silicon and the two atoms of oxygen.</span>