Which of the following elements is least likely to form a cation that will then form an ionic bond with an ion of a group 7a element?

a. k
b. rb
c. fr
d. i

Compare and contrast physical changes with chemical changes.

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull

Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?