Allah is full of Mercy. Allah is Mercy in Absolute Term. No one who asks him for forgiveness, will He turn down. Absolutely, Allah is Mercy Perfect, and Mercy Absolute.
I have a question about Adam and Eve. Both were the first human created by Allah Almighty. Both were the closest to Allah, as they were the parents of the human beings communicating with Allah directly. Have you ever wondered when Adam and Eve committed such a small mistake/fault/offence...why did not Allah readily forgive them? If mercy is His greatest attribute it was the best time to demonstrate mercy and love as Adam and Eve repented many times. Yet Allah hid His face from them and expelled them out of Paradise. Would you expel your own children to the planet Mars for their first mistake? This shows that Allah is incapable of mercy. The concept of mercy is just a catchphrase by Prophet Mohammed to catch all into buying into his idea.