Oxygen is less dense.
Element 34, which is selenium, contains 2 protons less than krypton. Krypton has 36 protons, while selenium has 34 protons.
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.
Helium is lighter (less dense) than oxygen & nitrogen.
Selenium can be reactive and form compounds with other elements. It reacts with oxygen to form oxides and with water to form various compounds. However, it is less reactive compared to other elements in the same group like sulfur and tellurium.
Helium is less dense than oxygen and nitrogen. Helium is the second lightest and least dense gas, while oxygen and nitrogen are heavier gases. This is why helium is often used to lift balloons, as it is less dense than the surrounding air.
Element 34, which is selenium, contains 2 protons less than krypton. Krypton has 36 protons, while selenium has 34 protons.
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.
Helium is lighter (less dense) than oxygen & nitrogen.
Element 34, Selenium, has an atomic mass of about 78.96.
Yes. Air is less dense at higher altitudes, so the oxygen is at a lower concentration.
yes, the air becomes less dense and there is less oxygen
more space for air (oxygen)
An oxide is a compound that contains oxygen and at least one other element that is less electronegative than oxygen.
Selenium is the most brittle of the elements listed: The others are all full metals, but selenium is only a semi-metal or a metalloid, and ductility, the negative of brittleness, is a property primarily of metals.
Hydrogen gas is considered the least dense element. It is less dense than air, which is why it is often used in balloons.
Because hydrogen gas is less dense than air(mostly nitrogen and oxygen), and the less dense gas flows to go above the more dense(and escape the atmosphere).
Selenium can be reactive and form compounds with other elements. It reacts with oxygen to form oxides and with water to form various compounds. However, it is less reactive compared to other elements in the same group like sulfur and tellurium.