Barium sulfate, BaSO 4 VS Barium hydroxide, Ba(OH) 2 How many more oxygen atoms are represented in the formula for barium sulfate than in the formula for barium hydroxide ?

BaSO₄ has 4 oxygens. Ba(OH)₂ has 2 oxygens.

Explanation:

The number of any one element is the coefficient times the subscript of that element. In BaSO₄, the coefficient is 1 and the subscript for oxygen is 4. In Ba(OH)₂, the coefficient is 1 and the subscript is 2. In Ba(OH)₂, the subscript is outside the () because OH⁻ is an ion and the subscript applies to both elements in the ().

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.