You have to provide the real information on Adsence. It will provide you one coding you have to upload on your website where you want to see the ad on your website. And after review it will start appearing.
Hi, I mean when our website approved by ADSense. Further ADSense ads show which place on a website? Mean "ads place on website" automatically generated by ADSense, or keep the blank place for ADSense ads by website owner?
What you're asking for is confusing ... I'm assuming after you're approved for adsense where should you place the ads? If that's what you mean, check out the Google 'heatmap' - http://support.google.com/adsense/bin/answer.py?hl=en&answer=1354747 This is an ad placement guideline that G has tested and has found to give the best CTR.
I know that we can place three ads in a page. But I want to know, is there any restriction for creating of ad units. Hoping for a suitable answer. Thanks