B. Argue: Your classmate predicted the magnets are going to repel because negative and positive charges
repel each other.
Explain why you agree or disagree. (I agree because
or I disagree because
I

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

6.4 cm (max) - 25 cm (min)

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.

a chemical change results in a new substance being formed; whereas a physical change will result in a different state of matter

explanation: