Answer:
We used coal for electricity, water for steam engines when we used them, natural fossil fuels for gasoline and oil and we use earths oxygen/nitrogen gases to breathe
Explanation:
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For an element whose third shell contains six electrons, the appropriate electron configuration is; 1s2 2s2 2p6 3s2 3p4.
The electron configuration shows the distribution of electrons in the shells of an atom and in orbitals.
We have been told that the six electrons are found in the third shell. This shell has n=3 and the configuration of this shell must ns2 np4.
The only electron configuration that meets this standard is 1s2 2s2 2p6 3s2 3p4.
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There are 3 pairs of electrons that are shared between nitrogen atoms in a nitrogen molecule. Nitrogen atom has a valence electron of 5. To complete it and agree with the octet rule, it should be that three electrons should share with another atom.
Answer:
Ionic compounds generally form between elements that are metals and elements that are nonmetals. For example, the metal calcium (Ca) and the nonmetal chlorine (Cl) form the ionic compound calcium chloride (CaCl2). In this compound, there are two negative chloride ions for each positive calcium ion
D the transfer of heat energy due to the motion of warmed material