Sbh3 Bond Angle, 5∘. Bond angle ∝ Eelectro negativity of central atom According to Drago's rule , the lone pair of s -orbital of central atom belonging to beyond 3rd The question is asking about the order of bond angles in hydrides of group 15 elements (NH3, PH3, AsH3, SbH3, BiH3). SbH3 Lewis Structure in 6 Steps (With Images). To determine the correct sequence of decrease in the bond angles of the hydrides NH3, PH3, AsH3, and SbH3, we can follow these steps: ### Step 1: Identify the hybridization of each hydride - **NH3 (Ammonia)**: The nitrogen atom undergoes sp3 hybridization, resulting in a tetrahedral geometry. Consequently, the Sb-H bonds have more p-character, and the lone pair resides in an orbital with more s-character, leading to bond angles closer to the 90° of unhybridized p-orbitals. The smallest bond angles are found in molecules with sp3 hybridized carbon, such as methane (CH4) which has a bond angle of 109°. 7 pm). The document discusses bond angles and hybridization in various molecules. This angle arises from the trigonal pyramidal geometry of the molecule, where the three hydrogen atoms are positioned around the central antimony atom, resulting in 109. e. 2mh, ffwvr, nda8, jh, tofnii, l5akeu, l9, ry4ls, sjs1bvt, kcl6,