Bond angles and lone pairs

[Nolan_Kuo_2L]

I know that the angle between a lone pair and an adjacent bonded atom is greater than the typical bond angle. However, would the angle between two lone pairs change?

For example, in a tetrahedral molecule, all four bonded atoms are 109.5 degrees away from each other. However, if two of the bonded atoms were replaced with lone pairs, would the angle between the two lone pairs remain 109.5?

[Hanna Kim 1L]

Lone pairs don't form bonds so you won't be asked to determine the bond angles between two lone pairs. And yes, if the bond is replaced with lone pairs, bond angles between remaining atoms would likely decrease. Hope this helped.