Science
Which one of the following structures correctly depicts the compound CaCl2?
Chemical Bonding
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Answer
Reason — The valency of calcium is +2 and that of chlorine is -1. Two chlorine anions and one calcium cation form an ionic bond and the chemical formula of calcium chloride is CaCl2.
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Related Questions
Study the experimental set-up shown in given figure and choose the correct option from the following:
P Q Change observed in calcium hydroxide solution 1.K2CO3 Cl2 gas No change 2.KHCO3 CO2 gas No change 3.KHCO3 H2 gas Turns milky 4.K2CO3 CO2 gas Turns milky The pair(s) which will show displacement reaction is/are
(i) NaCl solution and copper metal
(ii) AgNO3 solution and copper metal
(iii) Al2(SO4)3 solution and magnesium metal
(iv) ZnSO4 solution and iron metal
- (ii) only
- (ii) and (iii)
- (iii) and (iv)
- (i) and (ii)
Which of the following salts do not have the water of crystallisation?
(i) Bleaching Powder
(ii) Plaster of Paris
(iii) Washing soda
(iv) Baking soda
- (ii) and (iv)
- (i) and (iii)
- (ii) and (iii)
- (i) and (iv)
Consider the pH value of the following acidic samples :
S.
No.Sample pH Value 1. Lemon Juice 2.2 2. Gastric Juice 1.2 3. Vinegar 3.76 4. Dil. Acetic acid 3.0 The decreasing order of their H+ ion concentration is
- 3 > 4 > 1 > 2
- 2 > 1 > 3 > 4
- 2 > 1 > 4 > 3
- 3 > 4 > 2 > 1