no, they have seven
Yes. It's true. Chlorine has the highest electron affinity, then Fluorine, Bromine and Iodine
true
Your question reveals a common confusion between orbitals and shells. Chlorine has three electron shells: the first, second and third. The first shell has just the one orbital, the 1s The second shell has two sub-shells, the 2s and the 2p. There are three p orbitals in the 2p sub-shell. Each orbital can hold two electrons, so there are eight electrons maximum in the second shell. The third shell likewise has two sub-shells, the 3s and the 3p, but the 3p is not completely filled, leaving room for one more electron. When chlorine gains this electron it will become a Cl- ion. This is summed up in the electron configuration 1s22s22p63s23p5.
True. The Lewis definition of an acid describes it as a substance that can accept an electron pair, while a base is a substance that donates an electron pair.
Group 17 elements (group 7) become more reactive as you move down the group due to the increase in atomic size and shielding effects. As you go down the group from fluorine to iodine, the outermost electron shell gets farther from the nucleus, leading to weaker attraction, making it easier for the elements to gain an electron and become more reactive.
Yes. It's true. Chlorine has the highest electron affinity, then Fluorine, Bromine and Iodine
No,. The halogens will gain 1 electron when they react if electrons are exchanged.
The statement is about tetratritium iodide (T4), which contains four iodine atoms per molecule.
False. Electronegativity is a measure of an atom's ability to attract and share electrons in a chemical bond, which can vary for atoms with the same number of electron shells as it depends on factors such as nuclear charge and atomic radius.
Electrons surround the nucleus and are not inside one.
Iodine
true
both a and b are true for iodine and radioactive iodine isotope
Your question reveals a common confusion between orbitals and shells. Chlorine has three electron shells: the first, second and third. The first shell has just the one orbital, the 1s The second shell has two sub-shells, the 2s and the 2p. There are three p orbitals in the 2p sub-shell. Each orbital can hold two electrons, so there are eight electrons maximum in the second shell. The third shell likewise has two sub-shells, the 3s and the 3p, but the 3p is not completely filled, leaving room for one more electron. When chlorine gains this electron it will become a Cl- ion. This is summed up in the electron configuration 1s22s22p63s23p5.
Yes, it is true.
Yes
Yes, it is true that the acidic ocean water will erode the calcium carbonate shells.