chloride in water and measure the conductivity with a calibrated conductivity meter so you can verify the molarity. The first solution you will need to produce is 100.0 mL of 1.50 M CaCl2. Once you make your first solution, you nee to make a second solution through dilution of 100.0 mL of 0.250 M CaCl2. ​

particle   p is an electron and particle q is a neutron

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.