[Ar] 3d10 4s2 4p4
No, selenium is solid.
No, selenium is solid.
No, it is a solid.
There is no boble gas notation for hydrogen and helium. The noble gas notation starts for elements after helium. The noble gas notation is a notation formed as a result of the electron configuration notation being used in conjunction with noble gases. The noble gas preceding the element in question is written then the electron configuration is continued from that point forward.
The noble gas notation starts for elements after helium. Helium has no noble gas notation. Its electronic configuration is 1s2
give fraction notation for the amount of gas in the tank
Selenium http://www.chemicalelements.com/elements/se.html
Hydrogen selenide, with formula H2Se, is formed from reacting hydrogen and selenium.
Xenon as it is a noble gas. Noble gases are inert and do not react with anything. Selenium is a solid Chlorine is a green coloured highly reactive poisonous gas. Carbon is a non-metallic solid.
The noble gas notation for xenon is [Kr] 5s2 4d10 5p6.
Selenium should gain two electrons and lose six electrons to achieve a noble gas electron configuration.
None. The Se2- ion is isoelectronic with Krypton.