[{"id": "7190e5", "text": "", "content": [{"type": "content/math", "position": 0, "content": "\\Large\\mathrm{_{\\ \\ 8}^{17}O}", "is_multiline": false}], "text_styles": [], "block_styles": []}, {"id": "fducsv", "text": "", "content": [{"type": "content/math", "position": 0, "content": "\\Large\\mathrm{_{\\ \\ 9}^{19}O}", "is_multiline": false}], "text_styles": [], "block_styles": []}, {"id": "5d515r", "text": "", "content": [{"type": "content/math", "position": 0, "content": "\\Large\\mathrm{_{\\ \\ 8}^{16}O}", "is_multiline": false}], "text_styles": [], "block_styles": []}, {"id": "4apkh1", "text": "", "content": [{"type": "content/math", "position": 0, "content": "\\Large\\mathrm{_{\\ \\ 6}^{14}C}", "is_multiline": false}], "text_styles": [], "block_styles": []}] \Large\mathrm{\text{Какой изотоп обозначен Х в уравнении ядерной реакции} \ _{\ \ 7}^{14}N + _2^4H \to X + _1^1H}