ocr: 20 28 Which sketch best represents the following 19 18 Ir Silicon Hydride Silicon (family IV), makes 4 bonds with Polar hydrogen resulting in tetrahedral 27 Nonpolar molecules (109° bond angles) A - - - 3 C. 2D.F E t - - - à - - - - - ag - - - 15 Click on the correct answer. 13 (allow 4 seconds to reset atter wrong answers)