If there is 2 childern can you leave everything to only one and the other nothing in the state of Texas

I am a California attorney but I will say, with great confidence, that you can leave all your money to one child in any state in this country. It's YOUR money. it's not your kids money. However, you should work with an experienced estate planning attorney as they might have some ideas to incorporate into the plan to make it work out exactly as you envision.