Elements are classified by their?

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons