Uranium is an element that is often used in nuclear power plants. uranium atoms are very large, and the substance can be dangerous if it is not carefully contained. what is true about all uranium atoms? they each have the same number of nuclear particles. they each have the same number of neutral particles. they each have the same number of neutrons. they each have the same number of protons.

The answer is;  They each have the same number of protons

All uranium isotopes have 92 protons in their nucleus. However, they differ in the number of neutrons in the nucleus, hence this also translates to varying mass numbers (which is the sum of neutrons and protons in the nucleus). The most common isotopes of uranium are; U-238, U-235, and U-234.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.