I need to popluate values from parent record to child record using trigger if the object is same ,
Suppose in Account object(choose Record Type A) i have created and now i am going to create another record(let say child account record) in Account object but this time i have choose the Record Type B
So while i am creating child record some fields need to copy from first account record to child account record [i have created self relationship here]

below is the code 

Trigger PopulatevaluesonChildAccount on Account(Before Insert)
{
    Set<Id> ParentIds = New Set<Id>();

   For(Account A : Trigger.New)
    {
        ParentIds.Add(A.AccountType__c);
    }

   List<Account> ParentList = [Select Id,AccountType__c,name from Account where Id =: ParentIds];
   System.debug(ParentList);
   For(Account ChildAccount : Trigger.New)
    {    
        For(Account ParentAccount : ParentList)
        {
            IF(ChildAccount.AccountType__c == ParentAccount.ID)
                System.debug(Co);
            {
                IF(ParentAccount.Name != NULL)
                {
                    ChildAccount.Name = ParentAccount.Name ;
                    ChildAccount.AccountType__c=ParentAccount.Id;
                   
                }
            }
        }
    }

Can someone please help on that