Circle the atom in each pair that has the greater electronegativity and explain why. a. Br or As
b. Li or Xe

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

In salt water solution,the salt is the blank