Monday Homework

                                                                       Homework 

                                                                    By Kelly Moran 

pg. 77

6.) In the first column, there must be 12 protons and 12 neutrons.

     In the second column, there must be 12 protons and 13 neutrons.

     In the third column, there must be 12 protons and 14 neutrons.

7.) Protons and neutrons are about 2,000 times as massive of an electron.

8.) 266 is the number of protons plus neutrons. You need the number of protons to figure out the mass. Stating the mass itself is not enough to create a new element. 

9.) a.) Row= Period

     b.) Column= Group

10.) Two elements in the alkali metal family are sodium (Na) and Potassium (K).

pg. 57

2.) a.) Not neutral/ Charge: -1

     b.) Not neutral/ Charge: +3

     c.) Not neutral/ Charge: +3

     d.) Not neutral/ Charge: +2

     e.) Is neutral/ Charge: neutral