Chlorine and iodine undergo similar reactions.Which one of the following explains why chlorine and iodine react similarly?Chlorine and iodine both have the same relative atomic mass. The relative atomic mass determines how atoms will react.Chlorine and iodine both have the same atomic number. The atomic number determines how atoms will react.Chlorine and iodine both have 7 protons on their outer shell. The number of protons on the outer shell determines how atoms will react.Chlorine and iodine both have 7 electrons on their outer shell. The number of electrons on the outer shell determines how atoms will react.

Which one of the following explains why iodine is less reactive than chlorine?• The outer electrons in iodine are further from the nucleus and are shielded by more inner shells of electrons.• This means there is a weaker attraction between the positively charged nucleus and the negatively charged outer electrons.• This makes it harder for iodine to attract another outer electron than chlorine.• The outer electrons in chlorine are further away from the nucleus and are shielded by more inner shells of electrons.• This means there is a weaker attraction between the positively charged nucleus and the negatively charged outer electrons.• This makes it easier for chlorine to attract another outer electron than iodine.• The outer electrons in iodine are closer to the nucleus and are shielded by fewer shells of electrons.• This means there is a weaker attraction between the positively charged nucleus and the negatively charged outer electrons.• This makes it easier for iodine to gain an outer electron than chlorine.

describe the nature of the compoundsformed when chlorine, bromine and iodine react with metals andnon-metals

Naturally occurring chlorine is composed mainly of two isotopes,   and  . The average atomic mass of chlorine is  .

6. The halogens are a group of elements showing trends in colour, state and reactionwith other halide ions.a Copy and complete the word equation for the reaction of chlorine with aqueouspotassium bromide.chlorine + potassium bromide →b Explain why an aqueous solution of iodine does not react with potassium chloride.

Lithium and sodium undergo similar reactions.Which one of the following explains why lithium and sodium react similarly?Lithium and sodium both have the same atomic number. The atomic number determines how atoms will react.Lithium and sodium both have the same relative atomic mass. The relative atomic mass determines how atoms will react.Lithium and sodium both have 1 electron on their outer shell. The number of electrons on the outer shell determines how atoms will react.Lithium and sodium both have 1 proton on their outer shell. The number of protons on the outer shell determines how atoms will react.I DON'T KNOWSUBMIT ANSWER