When we talk about Jesus being the Son of God, we don't mean that God had a wife and physically fathered a Son. We mean that Jesus Christ fully reveals God to us. Jesus is God revealing Himself to us in human form. See some of the things the Qu'ran says about Jesus here You can know what God is like by studying the Christian Gospels concerning Jesus Christ. God is compassionate andloving as well as just and righteous.
Christians also believe in hell.
However, nowhere does the Bible clearly teach that God predestines anyone to hell. He has predestined some to Eternal Life. It doesn't say about the rest. The Koran however teaches that Allah is leading all the unbelievers into deception and ultimately to hell. In Islam, you can never know if your good works are enough to get you to Paradise.