Two different atoms have six protons each and the same mass. However, one has a negative charge while the other has a positive charge. Describe what each atomic structure could be listing the possible number and location of all subatomic particles

At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.