The molecule N (Sime3)3 has aa)pyramidal shape and is a lewis baseb)py...
Lewis Base and Lewis Acid
A Lewis base is a molecule or ion that donates a pair of electrons to form a coordinate covalent bond. A Lewis acid is a molecule or ion that accepts a pair of electrons to form a coordinate covalent bond.
Trigonal Planar Geometry
The trigonal planar geometry is a molecular shape that has three atoms in the same plane, with a bond angle of 120° between each pair of atoms. This shape is commonly found in molecules with a central atom that has three bonding pairs and no lone pairs of electrons.
N(SiMe3)3 Molecule
The N(SiMe3)3 molecule has a trigonal planar geometry, with the nitrogen atom at the center and three SiMe3 groups attached to it. This molecule has no lone pairs of electrons on the nitrogen atom, making it unable to donate a pair of electrons and therefore not a Lewis base.
Lewis Base Character
Since the N(SiMe3)3 molecule does not have any Lewis base character, it cannot act as a donor of a pair of electrons to another molecule or ion. Therefore, option D is the correct answer, which states that the molecule has a trigonal planar geometry and has no Lewis base character.
The molecule N (Sime3)3 has aa)pyramidal shape and is a lewis baseb)py...
Since Si has vacant d-orbital, Lone pair of nitrogen are involved in back bonding with SiMe3 and this bond will be pie bond. So hybridization of N =SP2, hence geometry is trigonal planar and since N does not have any Lone pair of electrons now, it has no lewis base character.