Question

------------- are soft and dull in appearance. They break down into a powdery mass on tapping with a hammer. They are not sonorous and are poor conductors of heat and electricity. These materials are called ----------------------- The examples of non-metals are sulphur, ----------------------,-------------------------------,------------------------,------------

Answer 1

Answer:

the answer is sodium . non metals . ex are carbon, phosphorus, iodine, selenium. hope it helps u.