3 years ago

Which formula contains only two elements? 1)Bi(NO3)32)KOH3)NaClO34)Al2S3

1 answer:

3 0

Elements are made of one type of atoms. Elements have characteristic symbols for their identification.
1) Bi(NO₃)₃ - this is made of 3 elements - Bismuth , Nitrogen and oxygen
2) KOH - made of 3 elements - potassium (K), oxygen and hydrogen
3) NaClO₃ - made of 3 elements - sodium (Na), chlorine and Oxygen
4) Al₂S₃ - made of 2 elements - Aluminium and sulphur
we are asked for the formula with 2 elements , correct answer is 4)

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