미해결 질문An atom's mass number is 13 and its atomic number is 6. How many neutrons are in its nucleus?1092views
미해결 질문How many protons, neutrons, and electrons are there in a neutral atom of 97Tc (Technetium-97)?1107views
미해결 질문What is the atomic symbol and mass number for an atom containing 50 protons and 64 neutrons?1356views
미해결 질문Rounded to the nearest whole number, how many neutrons, on average, are in an atom of osmium?1353views
미해결 질문In an electrically neutral atom the number of protons in the nucleus is equal to the number of?1018views