image: By adjusting the occupancy of the 4f orbitals, it is possible to induce the HAT mechanism for the activation of C-H bonds. view more Credit: ©Science China Press ...

New study discovers unexpected role of 4f-orbital covalency in driving chemical reactivity The willingness of the 4f orbitals of lanthanide metals to participate in chemical reactions is as rare ...

The willingness of the 4f orbitals of lanthanide metals to participate in chemical reactions is as rare as their presence in Earth's crust. A recent study, however, witnessed the 4f orbital in a ...

Skynet 4F was initially located over 6°E for about a month and then manoeuvred to drift to the west. When it reached 2°E, a further manoeuvre started an eastbound drift, reaching 16°E.