Nuclei Test - 3...

The fusion of light elements take place at about the temperatures of about 

The nucleus obtained after $$\alpha$$ -emission from the nucleus $$_{y}\textrm{A}^{x}$$ is 

The energy of thermal neutrons is nearly

The particle $$X$$ in the following nuclear reaction is $$_{3}^{7}{Li}$$ + $$_{1}^{1}\textrm{H}$$ $$\longrightarrow $$ $$_{2}^{4}\textrm{He}$$ + $$X$$

Which of the following is correct?

The particle $$X$$ in the following nuclear reaction is  $$_{7}^{13}\textrm{N}$$ $$\longrightarrow $$ $$_{6}^{13}\textrm{C}+$$  $$_{1}^{0}\textrm{e}$$ + $$X$$

The particle $$X$$ in the following nuclear reaction is $$_{5}^{B}\textrm{10}$$ +$$_{2}^{He}\textrm{4}$$ $$\longrightarrow $$ $$_{7}^{N}\textrm{13}$$ + $$X$$

The temperature necessary for fusion reaction is 

If $$_{5}\textrm{B}^{11}$$ converts into $$_{6}\textrm{C}^{11}$$, then the particle emitted in this process will be 

An element X decays, first by positron emission and then two $$\alpha$$-particles are emitted in successive radioactive decay. If the product nucleus has a mass number $$229$$ and atomic number $$89$$, the mass number of atomic number of element X are