Which element belongs to the f-block ? oxygen iron argon uranium

The answer to your question is: Uranium.

Explanation:

Elements of the f-block are the elements of the inert earth transition metals. They the located in 2 rows beow the other elements in the periodic table. They included lathanides and actinides.

Oxygen belongs to the p-block, so it is not oxygen the answer.

Iron belongs to the d-block. This is incorrect.

Argon belongs to the p- block, this option is incorrect.

Uranium belongs to the f-block.

so what is the problem with your lab report and whats the subject of the lab report? i will you

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.