It is: 8
82
82
82
It is 82.
It is 82 when rounded to the nearest whole number because .2 is less than .5
82 is approximate to100 to the nearest hundred80 to the nearest ten
82.265 rounded to the nearest whole number is 82 because .2 is less than .5
As an integer, it is already rounded to the nearest tenth.
80
80
Look on the periodic table for the element with the closest atomic mass to that number. It's lead (Pb, #82.) Now, for the neutron count, you round that atomic mass to the nearest whole number, which is 207, then subtract the atomic number of 82 from it. 207-82=125. So 125 neutrons.
82%