Initial Knowledge Check For each row in the table below, decide whether the pair of elements ill form a molecular or lonic compound. If they will, then enter the chemical formula of the compound. If the elements will form more than one compound, enter the compound with the fewest total number of atoms. You may assume all chemical bonds are single bonds, not double or triple bonds element \'1 element #2 compl ind formed? chemical Da O neither krypton molecular n nelther chlorine magnesiumo molecular O neither Solution 1) Hydrogen and oxygen are both non metals So, they will form molecular compound The compound is H 2 O Answer: molecular H2O 2) Krypton is noble gas. It do not react with metal Answer: neither 3) Chlorine is non metal and Magnesium is metal So, they form ionic compound Magnesium form ions Mg 2+ Chlorine forms Cl - these ion combine to form MgCl2 Answer: ionic MgCl 2 .

1. Initial Knowledge Check For each row in the table below, decide whether the pair of elements ill
form a molecular or lonic compound. If they will, then enter the chemical formula of the
compound. If the elements will form more than one compound, enter the compound with the
fewest total number of atoms. You may assume all chemical bonds are single bonds, not double
or triple bonds element '1 element #2 compl ind formed? chemical Da O neither krypton
molecular n nelther chlorine magnesiumo molecular O neither
Solution
1)
Hydrogen and oxygen are both non metals
So, they will form molecular compound
The compound is H 2 O
Answer:
molecular
H2O
2)
Krypton is noble gas.
It do not react with metal
Answer:
neither
3)
Chlorine is non metal and Magnesium is metal

2. So, they form ionic compound
Magnesium form ions Mg 2+
Chlorine forms Cl -
these ion combine to form MgCl2
Answer:
ionic
MgCl 2