How much money should I put in as Earnest money in Escrow account

[Raj G.]

Hi, suppose I buy a home for $500K, with 20% down payment then how much money I should put in Escrow.          

 In my case, in my offer, listing agent put $5k at the time of my offer, then $45k after attorney review and then remaining 10% during closing, so I put 10% before home inspection.

Just wondering if that standard practice.