Question

1. Write the chemical formula for the following
compounds using criss-cross method
a. Hydrogen Chloride
b. Sodium Nitrate
c. Aluminium Oxide
d. Calcium Hydroxide​

Answer 1

Answer:

option A is your correct answer

Explanation:

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Answer 2

Answer:

YOU SHOULD KNOW THE VALENCIES

Explanation:                            valencies

hydrogen chloride=HCL           1 and 1

sodium nitrate=NaNO3             1 and 1

aluminium oxide=Al2O3            3 and 2

calcium hydroxide=CaOH         1 and 1

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