Question

please show me the Criss cross method of the valency for i..hydrogen carbonate...ii hydrogen sulphide and iii hydrogen sulphate

Answer 1

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Answer 2

HI Friend !!

1)Hydrogen Carbonate

Symbol                                  H                                              CO₃
Valency                                  1                                                  1
We just have to criss cross the symbols with the valency of the other element.

By criss cross method , formula = HCO₃

2)Hydrogen sulphide:

Symbol                                            H                              S
Valency                                            1                              2-

By criss cross method , formula = H₂S


3)Hydrogen sulphate 

Symbol                                            H                                          SO₄
Valency                                            1                                             2

Formula = H₂SO₄