I'm a bit new to electrum and pondering now on how to create QR code for receiving address which is in the list of available addresses. Is there any possibility to do this internally in Electrum itself ?
You mean the addresses in the "
Addresses" tab?
In Desktop Electrum: Right-click on the address of your choice, select "
details"; then click the QR code icon near the address (
above);
A QR code of that address will be displayed.
This button:
In Android Electrum: Go to 'Menu/...->Addresses', tap the address of your choice, then tap the green highlighted address and the QR code will be displayed.