Letter Alif is the first letter of the Arabic alphabet, is belongs to partial- connecting group of letters - this letter can only be connected from it right side. A glottal stop, like 'a' in apple 'i' in ink 'u' in umlaut
The sound of letter Alif and Hamza is identical. The Holy Qur'an printed in sub-continent Indo-Pakistan instead of printing Hamzah over Alif (where a hamzah comes in the middle of a word and is shown riding an Alif such as ) it is simply denoted by sukun sign and Hamzah is pronounced. But in the copies of the Holy Qur'an printed in Egypt, Turkey, Saudi Arabic and elsewhere a Hazah with a sukun is actually printed over Alif and this is in fact, is the correct script. example
Similar shape group None
Letter Alif is pronounced from the emptiness in the mouth