Numerade

Problem 2

Answer true or false. (a) The octet rule refers to the chemical bonding patterns of the first eight elements of the Periodic Table. (b) The octet rule refers to the tendency of certain elements to react in such a way that they achieve an outer shell of eight valence electrons. (c) In gaining electrons, an atom becomes a positively charged ion called a cation. (d) When an atom forms an ion, only the number of valence electrons changes; the number of protons and neutrons in the nucleus does not change. (e) In forming ions, Group 2 A elements typically lose two electrons to become cations with a charge of +2+ (f) In forming an ion, a sodium atom $\left(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}\right)$ completes its valence shell by adding one electron to fill its 3 s shell $\left(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2}\right)$ (g) The elements of Group 6 A typically react by accepting two electrons to become anions with a charge of -2 (h) With the exception of hydrogen, the octet rule applies to all elements in periods 1,2 and 3 (i) Atoms and the ions derived from them have very similar physical and chemical properties.

Lottie Adams Numerade Educator

Introduction to General, Organic and Biochemistry

Summary