미해결 질문An atom's mass number is 13 and its atomic number is 6. How many neutrons are in its nucleus?1085views
미해결 질문How many protons, neutrons, and electrons are there in a neutral atom of 97Tc (Technetium-97)?1103views
미해결 질문Rounded to the nearest whole number, how many neutrons, on average, are in an atom of osmium?1342views
미해결 질문In an electrically neutral atom the number of protons in the nucleus is equal to the number of?1013views