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64 ✥ ✤✪ ✖✚ ✑★ ✤ ✢✗ ✒ ✥✓ ✚ ✜ ❋ ✰✗ ✑ ✑ ✓ ✗ ✵ ✔ ✑ ✚ ✥✓ ✖ ✜ ✧ ❁✑✜ ❖ ✤✓ ✑✑ ✰✗✦ ✜ ▲ ✒ ❬ ✒ ✒ ✓ ✏✚ ✤ ✒ ✤ ✓ ✢❡✕ ✙ ✘✤ ✤ ✗✥ ✪ ✎♥✌ ✹✳q ✪ ✗ ✔ ◆ ✓✜ ✑ ✒ ✧✚ ✑ ✒ ✗ ✒ ✦ ✪ ✜ ★ ✒ ★ ✔ ✒ C:\Chemistry XI\Unit-2\Unit-2(2)-Lay-2.pmd 12.1.6 (Final)14.1.6,16.1.6, 17.1.6, 24.1.6