MCQ
The atomic number of an element is derived from
- ANumber of electrons
- ✓Number of protons
- CNumber of neutrons
- DNumber of isotopes
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$(i)$ $Co^{3+}$ (Octahedral complex with a strong field ligand)
$(ii)$ $Co^{3+}$ (Octahedral complex with a weak field ligand like $F^-$ )
$(iii)$ $Co^{2+}$ (Tetrahedral complex)
$(iv)$ $Co^{2+}$ (Square planar complex)
The heat of the reaction $2Mg + Si{O_2} \to 2MgO + Si$ is......$kJ$