CH2O has three regions of ____ around its ____. As the electron clouds ____ to ____, they take a trigonal planar geometry with a ____. All regions are bonded and so ____ ____ NF3 has ____ of negative charge around its central atom. As the ____ maximise separation to minimise repulsion, they take a ____ with a ____ ____ Three of the regions are bonded and ____, so the molecular shape is ____ N2O has ____ around the central N atom. These regions arrange with ____ to ____, giving N2O a parent geometry ____ and a bond angle ____. N2O has two bonding and zero non-bonding regions so an ____ ____ hydrazine (N2H4) has four regions of electron density around the N atom. N2H4 has a parent geometry ____ and a bond angle ____ about each N atom. N2H4 has three bonding and ____ regions about each nitrogen atom, giving an ____ In CHCl3, there are two types of bond, ____ each polar, due to the ____ ____ between C and H and C and Cl atoms. These dipoles have different polarities as H and Cl have ____ Despite the tetrahedral arrangement ____, the different sized bond dipoles ____ ____ so CHCl3 ____ In NH3, the ____, i.e. have a dipole, due to the ____. These three, equally sized, dipoles are arranged in a ____ ____ resulting in the bond ____ each other out, so ____ Both the P–Cl and B–Cl bonds in each molecule ____ due to the difference ____ between atoms. In PCl3, the bond dipoles are ____ due to the trigonal pyramid shape, meaning ____ and ____ In contrast, due to the symmetrical nature of ____ BCl3, the bond dipoles do cancel, and ____

C2.4 Shapes and Polarity NCEA questions

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