How many electrons in 234U?

Answer 1

92. All isotopes of Uranium have 92 protons.

The number of protons in each element is represented by the atomic number of that element. Uranium is atomic # 92, so it will always have 92 protons.

The difference in Atomic Mass (that's the 234 here) is due to difference in number of neutrons. Atomic mass is calculated (#of protons + # of neutrons), so Uranium-234 has 92 protons and 142 neutrons. Uranium-235 would have 92 protons and 143 neutrons and so forth.

The number of protons contained in the nucleus of ANY atom will remain constant in ALL isotopes of the same element. Ex. Carbon-12 has 6 protons and 6 neutrons, Carbon-13 has 6 protons and 7 neutrons, etc. Carbon has an atomic number of 6.

If the number of protons in the nucleus of an atom were different, it would no longer be the same element.

Ex.

Carbon - atomic #6 - has 6 protons

with one more proton in the nucleus, it would have 7, and have atomic # 7....

then it would just be...... Nitrogen!

Nitrogen - atomic #7 - has 7 protons

Answer 2

Uranium's atomic number is 92, which is the number of protons in the nucleus of a uranium atom. A neutral uranium atom has 92 electrons, the same as the number of protons, regardless of its mass number.

Answer 3

235U has 235 nucleons: 92 protons and 143 neutrons.

Answer 4

In any atom of uranium, there are 92 protons. The number of neutrons may be found by subtracting the number of protons from the isotope mass number: 232 - 92 = 140 neutrons.

Answer 5

142