An element Z has a combining power of 3. Which of the following formulae is correct of its compound? by Sunday | Apr 18 | Chemistry NECO | 0 comments A. ZS3 B. ZSO3 C. ZSO4 D. ZO3 E. Z3Cl2 Correct Answer: Option D – ZO3 Users Also Read These:An element with the electron configuration of 1s²…The factor of production which takes the initiative…An element X has electron configuration 1s² 2s² 2p6…An element of nucleon number P and atomic number Q…An element Z has a combining power of 3. Which of…