shapes of molecules

• what is the bond angle and shape of molecule with 2 bond pairs and 0 lone pairs?

  linear

  180°
• what is the bond angle and shape of molecule with 3 bond pairs and 0 lone pairs?

  trigonal planar

  120°
• what is the bond angle and shape of molecule with 2 bond pairs and 1 lone pair?

  v-shaped / bent

  117.5°
• what is the bond angle and shape of molecule with 4 bond pairs and 0 lone pairs?

  tetrahedral

  109.5°
• what is the bond angle and shape of molecule with 3 bond pairs and 1 lone pair?

  pyramidal

  107°
• what is the bond angle and shape of molecule with 2 bond pairs and 2 lone pairs?

  v-shaped / bent

  104.5°
• what is the bond angle and shape of molecule with 5 bond pairs and 0 lone pairs?

  trigonal bipyramidal

  90° + 120°
• what is the bond angle and shape of molecule with 4 bond pairs and 1 lone pair?

  seesaw

  90° + 120°
• what is the bond angle and shape of molecule with 3 bond pairs and 2 lone pairs?

  t-shaped

  87.5°
• what is the bond angle and shape of molecule with 2 bond pairs and 3 lone pairs?

  linear

  180°
• what is the bond angle and shape of molecule with 6 bond pairs and 0 lone pairs?

  octahedral

  90°
• what is the bond angle and shape of molecule with 5 bond pairs and 1 lone pair?

  square pyramidal

  90°
• what is the bond angle and shape of molecule with 4 bond pairs and 2 lone pairs?

  square planar

  90°
• what is the calculation for lone pairs?

  lone pairs of electrons = (group number - number of bond pairs) / 2
• what type of bonds do regular shapes have?

  bond pairs only
• what type of bonds do irregular shapes have?

  bond pairs and lone pairs
• what is the shape of a molecule determined by?

  electron pairs in outer shell
• what is the explanation for the bond angle in a regular shaped molecule?

  bond pair of electrons repel equally
• what is the explanation for the bond angle in a regular shaped molecule when there is 2 bond angles?

  minimise repulsion between electron pairs
• what is the explanation for the bond angle in an irregular shaped molecule with 1 lone pair?

  lone pair of electrons repel more than bond pairs of electrons
• what is the explanation for the bond angle in an irregular shaped molecule with more than 2 lone pairs?

  lone pair – lone pair repulsion is the greatest
• what is the explanation for the bond angle in molecules with six electron pairs?

  6 bond pairs of electrons repel equally