The atomic radius is found to decrease across the periodic table from lithium to fluorine. what best
accounts for this periodic trend?
(a)increasing nuclear charge
(b) increasing shielding
(c) increasing polarity
(d)increasing electronegativity
(e) increasing electron affinity

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.

Compare and contrast physical changes with chemical changes.

Which element would mostly likely have an electron affinity measuring closest to zero