According to periodic table which elements has seven valence electrons

The gravitational attraction between two objects would increase if both masses are

What percentage of radioactive substance remains after two half-lives

During which geological process is rock material transported from one location to another? A: deposition B: erosion C: chemical weathering D: mechanical weathering

Looking at the Bohr models of atoms offer an explanation as to WHY the atomic size changes as it does for both periods and groups. Periods: Groups:

What visible evidence indicates that a solution is saturated?

Which radioactive element is used to determine the absolute age of late pleistocene animal remains?

Compare the practical uses and limitations of nuclear fission and fusion. Include in your answer a detailed description of the two processes, comparing and contrasting them in terms of the types of atoms involved, the conditions needed to get the

Why can two igneous rocks have the same minerals but different names?

Where do the heaviest elements in our solar system come from?

Four students presented different analogies to describe the formation of an ionic bond. Student A: A tug of war between seven middle school students and a high school student Student B: A small dog and a big dog tugging at a bone with equal strength