Do electrum addresses stay the same? I just made a wallet and if I give that receiving address to someone, then they wait a week and send some bitcoins, will I get it? Like, the address is untouched for a week will it still work since I know helix only keeps it for 10 hours.
Yes, the addresses stay the same, and you will get the money somebody sends to any of your Electrum addresses. That's why it gives you those 12 or 13 words when you first make your wallet. All your addresses can be recreated from that, so you will always have access to any money sent to them.