Which pair of elements have the same amount of valence electrons lithium, beryllium, sodium, magnesium

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

Table sugar completely dissolved in water is an example of a?

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.