The picture below can be used to describe the describe the chemical bonds found

Question

The picture below can be used to describe the describe the chemical bonds found in nature, but it is incomplete. Fill in the blanks by providing descriptors of the kind of bonds being illustrated, as well as examples of the kinds of substances that exhibit each form of bonding. Which of the following statements is true? The molar mass of CaCO_3 is 100.1 g/mol 50 g of CaCO_3 contains 9 x 10^23 oxygen atoms a 200 g sample of CaCO_3 contains 2 moles of CaCO_3 I only II only III only I and III only I, II, and III Circle the least electronegative element. oxygen potassium nitrogen chlorine sulfur

Explanation / Answer

4. THE FIRST ONE FROM THE LEFT IS AN EXAMPLE OF IONIC BONDING AS TWO IONIC SPECIES ARE INVOLVED IN BONDING BY ELECTROSTATIC FORCE OF INTERACTION. EXP: NaCl

THE SECOND ONE IS AN EXAMPLE OF CO-ORDINATE BONDING WHERE Y DIRECTLY DONATES ITS ELECTRON TO ELECTRON DEFICIENT X. EXP: NH4+   ( NH3 + H+)

THe THIRD ONE IS AN EXAMPLE OF COVALENT BONDING AS X AND Y HAS COMPARABLE ELECTRONEGATIVITY AND SHARED EQUALLY THE ELECTRON PAIRS. NH3

5. THE CORRECT ANS IS E. ALL THE THREE STATEMENTS ARE ABSOLUTELY CORRECT.

6. THE CORRECT ANS IS B. BECAUSE POTASSIUM IS NOT AN ELECTRONEGATIVE ELEMENT RATHER AN ELECTROPOSITIVE METAL.

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