Select the correct answer.
What does the sign represent with respect to electrons?
A.
opposite spin of two electrons
B.
different principal energy levels of two electron
C.
distance of two electrons from the nucleus
D.
attraction between two electrons

Ase your answer to this question on the information below.hydrocarbons and fissionable nuclei are among the sources used for the production of energy in the united states. a chemical reaction produces much less energy than a nuclear reaction per mole of reactant.the balanced chemical equation below represents the reaction of one molecule of a hydrocarbon with two molecules of oxygen.chemical equation: ch4 + 2o2 → co2 + 2h2o + 1.48 × 10−18 jthe nuclear equation below represents one of the many possible reactions for one fissionable nucleus. in this equation, x represents a missing product.nuclear equation: write an isotopic notation for the missing product represented by x in the nuclear equation.

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles