Question

group 2 metals can bond with group 17 nonmetals to form ionic compounds. an example is calcium chloride, which is often used to melt ice on sidewalks during cold weather. complete the statement. to produce a neutral ionic compound, one ion from group 2 is needed for every ion(s) from group 17. show periodic table

Explanation:

Step1: Determine ion charges

Group 2 metals form +2 ions (lose 2 electrons). Group 17 non - metals form -1 ions (gain 1 electron).

Step2: Balance charges

To get a neutral compound, the total positive charge must equal the total negative charge. If the positive ion has a charge of +2 and the negative ion has a charge of -1, we need 2 of the -1 ions to balance the +2 ion.

Answer:

2