Which of the conformations of 2,3,4−trimethylheptane are staggered with respect to the marked bond?.

1. they vary with a higher number because boiling is way hotter than melting

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.