1. who suggested that the molecular formula for
water is h2o, not oh?
a. torricelli
b. lewis
c. pascal
d. dalton
e. avogadro
f. boyle
g. charles
h. newton
2. cathode rays are (electrons, neutrons, protons) and have the (largest, smallest)
charge/mass ratio of the fundamental particles found in the atom?
a. protons; smallest
b. protons; largest
c. none of the other answers is correct
d. neutrons; largest
e. electrons; largest

1) It was Avogadro (option E).

The full name is Amadeo Avogadro. He was a famous Italian scientific. He formulated the Law that states that same volume of gases at same temperature and pressure corresponds same number of particles.

2) Cathode rays are electrons and have the largest charge mass / ratio of fundamental particles found in the atom (option E)

For example, electrons have the same charge magnitude than protons, but the mass of the electrons is a small fraction of the mass of the protons. (1/1840)

Answer : option a) 84explanation :

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.

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