<human>: Q: Pb2+ causes lead glass to have what?
 A: The high ionic radius of the Pb2+ ion renders it highly immobile in the matrix and hinders the movement of other ions; lead glasses therefore have high electrical resistance, about two orders of magnitude higher than soda-lime glass (108.5 vs 106.5 Ohm·cm, DC at 250 °C).
 Does the answer correctly answer the question

OPTIONS:
- yes
- no
<bot>: yes