Based on how I'm understanding the question and comments, the only normal-sounding answer here would be "give it away." It's not necessarily wrong to say "give away it", but at the same time it's very choppy and not really natural. Personal pronouns encompass object and subject pronouns. Subject pronouns are the typical "I, you, he, she, it, we, they" and are seen/heard whenever they have a role as the doer in the sentence. Object pronouns are "me, you, him, her, it, us, them" and are found on the receiving end of an action. Hope this helps!

What is the difference between the first two sentences: give away it and give it away? Or how we can make this difference?

Can you help with some examples of what you want to say? Here are some sentences. Do you know which are correct? What does the word it represent? I didn’t want to give away it. I didn’t want to give it away. I didn’t want it to give away. The socks you gave away were mine. My socks were given away. Give my the socks away. Give my socks away. Which of these are correct and which are not?