1.

Complete the analogy:(1) Electron : extra nuclear part:: Neutron …………(2) Sodium: (2, 8, 1):: Chlorine:: ……………(3) K : basic radical :: Br- : ……..(4) Cut: simple radical:: NH4+: ........(5) Sodium sulphate: Na2SO4 :: Potassium Sulphate: ………(6) Mercurous: Hg+ :: Mercuric : ………………(7) Positively charged ion : cation:: Negatively charged ion : ………………(8) 12: 1 dozen :: 144 : ………………………… . (9) Hydrogen : \(\odot\) :: Copper : ………………………… . (10) Law of constant proportions : J. L. Proust:: Law of conservation of matter : ……

Answer»

(1) nucleus 

(2) (2, 8, 7) 

(3) acidic radical 

(4) composite radical

(5) K2SO4 

(6) Hg2+

(7) anion 

(8) 1 gross

(9) © 

(10) Antoine Lavoisier.



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