MCQ
Atomic number means
- ✓number of protons
- Bnumber of electrons
- Cnumber of neutrons
- Dnumber of nucleons
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${{C}_{2}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}+4[H]\xrightarrow{\text{Red P}+\text{HI}}2X+{{H}_{2}}O,$ $X$ is