Selenium is more in common with Sulfur because they are in the same group. They have the same number of valence electrons and the only elements Selenium is related to is Sulfur and Tellurium. Anna C.
Bromine has a higher ionization energy than selenium because bromine has a smaller atomic radius and stronger nuclear charge, making it more difficult to remove an electron from the outer shell. Additionally, bromine's electron configuration (4s2 3d10 4p5) is more stable compared to selenium's (4s2 3d10 4p4), making it require more energy to remove an electron from bromine.
Selenium has the largest atom among phosphorus, sulfur, and selenium because of its larger atomic radius. This is due to selenium having more electron shells and thus a greater distance from the nucleus.
Oxygen is more reactive than selenium. Oxygen is a highly reactive element that readily forms compounds with other elements, while selenium is less reactive in comparison. Oxygen's reactivity is evident in its ability to support combustion and oxidation reactions, whereas selenium's reactivity is more limited due to its position in the periodic table.
Selenium is more reactive than sulfur because it has a lower ionization energy and higher electronegativity, making it more readily form bonds with other elements. Additionally, its larger atomic size allows for easier electron transfer, enhancing its reactivity compared to sulfur.
Selenium is considered a heavy metal (although ironically a non-metal) and when combined with oxygen has relatively weak intramolecular forces that are easily overcome by the strong polarity of water forcing it to ionise. Sulfur ionises less readily
Se-Cl bonds
sulfur is more reactive than selenium
Bromine has a higher ionization energy than selenium because bromine has a smaller atomic radius and stronger nuclear charge, making it more difficult to remove an electron from the outer shell. Additionally, bromine's electron configuration (4s2 3d10 4p5) is more stable compared to selenium's (4s2 3d10 4p4), making it require more energy to remove an electron from bromine.
Selenium has the largest atom among phosphorus, sulfur, and selenium because of its larger atomic radius. This is due to selenium having more electron shells and thus a greater distance from the nucleus.
Calcium. Calcium has 20 protons, sulfur has 16, and bromine has 35.
Bromine (Br) is more reactive than chlorine (Cl) and selenium (Se). Bromine has a lower ionization energy and a larger atomic radius compared to chlorine and selenium, making it more willing to participate in chemical reactions.
The nonmetal in period 4 that is more reactive than selenium is sulfur. Sulfur is located above selenium in the same group (group 16) on the periodic table, making it more reactive due to its higher electronegativity and tendency to gain electrons in chemical reactions.
Oxygen is more reactive than selenium. Oxygen is a highly reactive element that readily forms compounds with other elements, while selenium is less reactive in comparison. Oxygen's reactivity is evident in its ability to support combustion and oxidation reactions, whereas selenium's reactivity is more limited due to its position in the periodic table.
Selenium is more reactive than sulfur because it has a lower ionization energy and higher electronegativity, making it more readily form bonds with other elements. Additionally, its larger atomic size allows for easier electron transfer, enhancing its reactivity compared to sulfur.
Selenium is considered a heavy metal (although ironically a non-metal) and when combined with oxygen has relatively weak intramolecular forces that are easily overcome by the strong polarity of water forcing it to ionise. Sulfur ionises less readily
Selenium and sulfur are both chalcogens and can form covalent bonds with each other. In their compounds, they are more likely to form covalent bonds rather than ionic bonds due to their similar electronegativities. The bond between selenium and sulfur would likely be a covalent bond.
Chlorine and fluorine are more reactive compared to the elements listed, because they are both in group 17 of the periodic table and have a higher tendency to gain electrons to achieve a stable electron configuration.