First time hatching- eggs viable?

[AuroraS2]

Greetings! First time hatching here, could someone advise me please if these eggs are viable and alive? For context, first white one is mallard duck egg, gifted a week ago (I don't think this one is viable but I have kept it in the incubator in case this last week in case there is some hope, have not seen sign of veins developing in that time), second egg is similar appearance to the other 5 eggs which are Cayuga. I would be grateful for advice, thank you in advance!

 

[sourland]

What day of incubation are they on?

 

[AuroraS2]

What day of incubation are they on?

Thank you for answering so quickly, the white mallard egg is now probably 2 weeks old (no smell so I thought maybe it is viable, but because I see no veins still I am worried it will explode in the incubator), the cayuga eggs are a week old