Answer:
fluorine (F), and chlorine (Cl) because they are both halogens and belong to the same group in the periodic table
Explanation:
The pair of non - metals in the elements given that will have similar properties are chlorine and Fluorine.
This is because they both are elements commonly known by the group name Halogens which belong to group 7A.
Properties of halogens include;
- They are very reactive, have single covalent bonds and readily form other compounds.
- In the gaseous state, they will form diatomic covalent molecules.
Whereas, helium is a group 8 element, oxygen is a group 6 element while carbon is a group 4 element.
Answer:
Fossil fuels release carbon dioxide into the atmosphere. Coal has the approximate chemical formula CH. ... Natural gas is the best fossil fuel in terms of energy output per unit carbon dioxide emitted. Biomass is renewable because a new crop can be grown after each harvest, and biomass is a low carbon fuel.
Explanation:
The answer is A. Fusion splits atoms.
The equation will be balanced when the coefficient 2 is placed in front of NaNO3.
The principle that governs the balancing of reaction equations is that the number of atoms of each element on both sides of the reaction equation must be the same.
Let us consider the reaction; Na2S + Zn(NO3)2 -------> ZnS + NaNO3, the equation will be balanced when the coefficient 2 is placed in front of NaNO3.
Learn more about reaction equation: brainly.com/question/12708131