1. You are giving the vital information in instalments,
2. The will is clearly in favour of your mother directly without any ambiguity,
3. The will never stated that he wantwed the property to be transferred to you,
4. It is only stated that in case of the death of his wife before him, the property will go to his son i.e. your goodself,
5. Since your mother survived him, the property of your father has been bequeathed to your mother making her the absolute owner of the said property,
6. Being the absolute owner of the said willed property, your mother can do whatever she wants with the said property for which you can not agitate or lay any claim,
7. The Will is perfectly valid and enforceable,
8. You can not do anything now to get any share of the said property excepting praying for it as a favour from your mother.