20. C. SO E. SO. NP, NO, S0 -21, which substances are considered covalem? A. NH
ID: 590555 • Letter: 2
Question
20. C. SO E. SO. NP, NO, S0 -21, which substances are considered covalem? A. NH CI, KIO Cus, (NHO B. NH CI, KIO, S. (NIHO D. NH CI, KIO. H2O, (NH2O E. SF4, NHs, NO. Cl0 -22, which shows the following substances in order of increasing ionization energy? Ca Be Ba Mg A. Ba, Mg, Be, Ca B. Mg, Ba, Be, Ca C. Ba, Ca, Mg, Be D. Be, Mg, Ca, Ba E. Ca, Be, Ba, Mg 23. which shows the following substances in order of increasing ionization en Mg Ar Na A. Ar, Na, Mg, P B. Na, Ar, Mg, P C. Ar, P, Mg, Na D. Na, Mg, P, Ar E. P, Mg, Ar, Na 24. Which shows the following substances in order of increasing ato A. Ar, P, Si, Mg B. Si, Ar, Mg, P C. Si, P, Mg, Ar D. Mg, Si, P, Ar E. Ar, Mg, P, SiExplanation / Answer
answer 20) (NH4)2S , KCLO4,NaOH ,Ca3(PO4) are all ionic compound as each of them contains a positive cation and anion specie .
answer 21) SF4 ,NH3 , NO2, Cl2O7 are covalent componds which are formed by mutual sharing of electrons
answer 22) c) Ba , Ca , Mg , Be are alkaline earth metal in which down the group , the ionisation decreases due to the valence electrons present far away from nucleus .
answer 23) d) Na Mg p Ar are in increasing order of ionisation energy . Ar being the noble gas will have fully filled shells constitutes to maximum ionisation energy
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