Which of these is a non foliated metamorphic rock that is often used in countertops in tile slate marble Gneiss obsidian

Use a magnet to separate iron, evaporate water, i'm not sure how to separate the other two i'm sorry but good luck

Order of filling levels and sublevels of electrons: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²3f¹⁴5d¹⁰6p⁶for an element with 5 electrons in the 3d energy level: full configuration: 1s²2s²2p⁶3s²3p³.

Answerhave membrane-bound organelles;