What is one key islamic belief about god

Muslims believe in one, unique, incomparable God, Who has no son nor partner, and that none has the right to be worshipped but Him alone.  He is the true God, and every other deity is false.  He has the most magnificent names and sublime perfect attributes.  No one shares His divinity, nor His attributes.  In the Quran, God describes Himself: hope this helps

The answer is a and hi how are you doing