Choose the letter of the choice that best completes the statement or answers the question. elements in the same group have the same
a. atomic radius
b. energy level of outer electrons
c. nuclear charge
d. number of valence electrons

What term describes technology that operates on an atomic level

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

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .