b) GaroohGive two examples of the following.1) Monovalent elements2) RadicalsMatch the following1) Helium2) Aluminium3) Atomic number 124) Atomic number 8a) Magnesiumb) Inert gasc) Trivalentd) OxygenChoose the correct answer from the following:l) The ratio of the atoms of hydrogen and oxygen in a molecule ofIl)IlIl) The valency of cuprous and cupric ions areb) 1:2c) 2:1d) 2Atomicity of hydrogen isa) 1b) 2c) 3a) +1 and +2 respectivelyc) +3 and +4 respectivelyb) +2 and +3 respectivelyd)+1 and +3 respectively

b) GaroohGive two examples of the following.1) Monovalent elements2) R

1.	b) GaroohGive two examples of the following.1) Monovalent elements2) RadicalsMatch the following1) Helium2) Aluminium3) Atomic number 124) Atomic number 8a) Magnesiumb) Inert gasc) Trivalentd) OxygenChoose the correct answer from the following:l) The ratio of the atoms of hydrogen and oxygen in a molecule ofIl)IlIl) The valency of cuprous and cupric ions areb) 1:2c) 2:1d) 2Atomicity of hydrogen isa) 1b) 2c) 3a) +1 and +2 respectivelyc) +3 and +4 respectivelyb) +2 and +3 respectivelyd)+1 and +3 respectively
Answer» <p>match the following1) inert gases2) trivalent3) magnesium4)oxygen</p><p>choose the correct answeri) WATER - H20 , so ratio is 2:1 option Cii) 1, option Aiii) remember a trick.. - "rous" ending will always have lower valancy that "ric" ending..so , cuprous will have +1 and cupric will have +2.option A.</p>