Answer this above question pls....(science)
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- K(present in first group)
valency=+1
oxide is K2O
hydride is KH
- C(present in 4th group)
valency =+4
oxide is CO2
hydride is CH4
- Al(present in third group)
valency=+3
oxide is Al2O3
hydride is AlH3
- Si
valency=+4
oxide is SiO2
hydride is SiH4
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