g-block
hypothetical block of elements in the extended periodic table whose outermost electrons are posited to have one or more g-orbital electrons but no f-, d- or p-orbital electrons
en-US/ˈd͡ʒi - ˈblɑk/
en-GB/ˈd͡ʒiː - ˈblɒk/
hypothetical block of elements in the extended periodic table whose outermost electrons are posited to have one or more g-orbital electrons but no f-, d- or p-orbital electrons