Consulta la tabla periódica que se encuentra en el apéndice 1 de tu libro de tex o identifica si los siguientes conjuntos de elomentos forman parte de un poriod un grupo o ninguno. Unelos con una llnea. \( \begin{array}{l}\text { a) } \mathrm{Li}, \mathrm{Na}, \mathrm{K}, \mathrm{Rb} \\ \text { beriodo } \\ \text { br } \mathrm{Sr}, \mathrm{Ag}, \mathrm{Cd} \\ \text { c) } \mathrm{Fe}, \mathrm{Co}, \mathrm{Ni}, \mathrm{Cu} \\ \text { d) } \mathrm{He}, \mathrm{Ne}, \mathrm{Ar}, \mathrm{Xe} \\ \text { e) } \mathrm{S}, \mathrm{Se}, \mathrm{Te}, \mathrm{Po}\end{array} \quad \) Ninguno

Extremes of pH can damage human tissues. Reflux is simply the effect of stomach acid damaging the esophagus. Several strong acids and bases can be found around the home. Lye is strong base used for a variety of purposes around a house. Lye can also damage tissues. What effect does lye have on pH ? A. Decrease pH B It does not change pH (C) Increase pH

Homework Questions Content Question 1 Using principles of molecular orbital theory, how many unpaired electrons are in each of the following molecules? NO \( { }^{+} \)Blank 1 NO Blank 2 BC Blank 3 BeC Blank 4

Question 5 What is the pH of a solution, having the \( \mathrm{H}_{3} \mathrm{O}^{+} \)concentration of \( 7.06 \mathrm{e}-9 \mathrm{M} \) ? Add your answer

3. จงอ่านชื่อของสารประกอบต่อไปนั้ 3.1 Bas \( 3.2 \mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2} \) 3.3 ZnO \( 3.4\left(\mathrm{NH}_{4}\right) \mathrm{HPO}_{4} \) \( 3.5 \mathrm{~K}_{2}\left(\mathrm{CO}_{4}\right. \)

A substance with a pH of 2 is