Which properties are characteristic of metalloids? High electrical conductivity and a high melting point
Low electrical conductivity and a low melting point
Intermediate conductivity and a high melting point
Intermediate conductivity and a low melting point

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.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.