Which of the following types of coal requires the most intense pressure in order to form

One or more substances changing into one or more substances is an example of a

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table?