hcl , h2o đc cấu tạo từ mấy nguyên tử

2 câu trả lời

 HCL  đc cấu tạo từ 1 nguyên tử H và 1 nguyên tử CL

 H2O  đc cấu tạo từ 2 nguyên tử H và 1 nguyên tử O

Đáp án:

H2O được cấu tạo từ 2 nguyên tử Hidro và 1 nguyên tử Oxi.

 Được cấu tạo từ 2 nguyên tố là H và Cl theo tỉ lệ 1:1.

Giải thích các bước giải:

 

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