Previous nikaah breaking through accepting Islam

Q: I hope you can help with this question. I am a revert Muslim, I was previously married. When I was a Christian even back then my marriage with my Christian husband is in trouble, we have a very rocky marriage. When I accepted Islam, I tried to talk to him about Islam. At first he seemed to be ok with my new religion but as the years go by he demonstrated so much hate with my religion, he does not want me to practice my religious rites and beliefs and demanded me to return back to Christianity to which I object. I ask him for a separation since then which he accepts but lately when I contacted him for my wish to have an annulment. He suddenly objected to it. I wanted to marry a very good Muslim man who proposed to me because I see this man to be lawful and obedient to Islamic law. My question is am I allowed to marry this Muslim man according to Sharia law? I have read so many articles regarding this. I am confused. My Ex-husband is preventing me to practise Islam and even called my religion as devil. I don't want to be with him anymore because of this issue and many more. What is the Sharia ruling on this? I hope you can guide me.

Combining Salaahs

Q: I am giving exams when I depart from my home. It's Zohar time so I offer it but when I arrive at my home, it's maghrib time so can I offer Asr Salaah at Zohar time or at Maghrib time?

Names for girls and boys

Q: I was wondering if the following names are acceptable:

- Taariq as in, Taariq bin Ziyaad.

- Shurahbil who was involved in the Conquest of Syria - is he a Sahabi?

- Shurayh

- Jurayj as in the one mentioned in a hadeeth.

 

Girls'

- Humaydah

- Rumaysaa (Umm Sulaym bint Milhaan?)

- Humayraa (Aa'isha (Radiyallahu Anhas) nickname?)

Please provide Arabic and meanings.

Husband asking the wife to leave

Q: My sister has been in an emotionally and verbally abusive relationship for the past 7 years. Her husband recently asked her to leave and wants nothing to do with her. She left with her 3 children. Now he refuses to give her talaq out of spite and wanting to maintain control of her. Does the fact that he asked her to leave constitute a valid talaaq?