Is the following a cation or an anion and what is the charge?

a) an iodine ion with 53 protons and 54 electrons

b) an iron ion with 26 protons and 23 electrons

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding. i