Search results 6782 items matching your search terms. Filter the results Item type Select All/None Collection File Folder Image Link Movie Page Question Quiz Quiz History New items since Yesterday Last week Last month Ever Sort by relevance date (newest first) alphabetically What is the symbol for an isotope of uranium that has an atomic number of 92 and a mass number of 235? by Dr. Osama M. Khaled — published Sep 17, 2022 — last modified May 30, 2025 09:47 PM Located in Chemistry / Atoms, Molecules, and Ions / Atomic Theory How many protons and neutrons are in the iron atom by Dr. Osama M. Khaled — published Sep 17, 2022 — last modified Sep 18, 2022 09:13 AM Located in Chemistry / Atoms, Molecules, and Ions / Atomic Theory It is common to state the mass number after the name of an element to indicate a particular isotope by Dr. Osama M. Khaled — published Sep 18, 2022 — last modified Jul 03, 2025 12:29 PM Located in Chemistry / Atoms, Molecules, and Ions / Atomic Theory Names and Symbols of Common Elements by Dr. Osama M. Khaled — published Sep 18, 2022 — last modified Jul 13, 2024 10:06 PM — filed under: Year 9 Test your knowledge and memory identifying symbols of comment elements Located in Chemistry / Atoms, Molecules, and Ions Aluminum symbol is by Dr. Osama M. Khaled — published Sep 18, 2022 — last modified Sep 18, 2022 09:33 AM Located in Chemistry / Atoms, Molecules, and Ions / Names and Symbols of Common Elements Argon symbol is by Dr. Osama M. Khaled — published Sep 18, 2022 — last modified Sep 18, 2022 09:35 AM Located in Chemistry / Atoms, Molecules, and Ions / Names and Symbols of Common Elements Arsenic symbol is by Dr. Osama M. Khaled — published Sep 18, 2022 — last modified Sep 18, 2022 09:37 AM Located in Chemistry / Atoms, Molecules, and Ions / Names and Symbols of Common Elements Barium symbol is by Dr. Osama M. Khaled — published Sep 18, 2022 — last modified Sep 18, 2022 09:39 AM Located in Chemistry / Atoms, Molecules, and Ions / Names and Symbols of Common Elements Beryllium symbol is by Dr. Osama M. Khaled — published Sep 18, 2022 — last modified Sep 18, 2022 10:47 PM Located in Chemistry / Atoms, Molecules, and Ions / Names and Symbols of Common Elements Bismuth by Dr. Osama M. Khaled — published Sep 18, 2022 — last modified Sep 18, 2022 10:49 PM Located in Chemistry / Atoms, Molecules, and Ions / Names and Symbols of Common Elements < Previous 10 items 1 ... 140 141 142 143 144 145 146 ... 679 Next 10 items > Subscribe to an always-updated RSS feed.
