Jelaskan D dari Daptar jejer kimia dalam bahasa sunda

d block — d-block — Darmstadtium — Datolite — decay energy — decay mode — decay product — decomposition temperature — Delessite — Density — Deposition — Derek H. R. Barton —Deuterium — diamond — Diaspore — Diatomite — diffusion pump — Diopside — Diorite — Dipole — Discovery of the chemical elements — Distillation — Dmitri Ivanovich Mendeleev — Dmitrii Mendeleev — Dmitry Ivanovich Mendeleev — Dolomite — Donald J. Cram — Dorothy Crowfoot Hodgkin — Dubnium — Dudley R. Herschbach — Dysprosium —