gray arsenic Directory References Contents Ask the Chatbot a Question gray arsenic chemistry Ask the Chatbot a Question Also known as: metallic arsenic Learn about this topic in these articles:properties In arsenic…periodic table), existing in both gray and yellow crystalline forms. Read More Britannica ChatbotChatbot answers are created from Britannica articles using AI. This is a beta feature. AI answers may contain errors. Please verify important information using Britannica articles. About Britannica AI.