Nguyên tố hoá học - Bài tập trung bình

Home Lớp 10 Hóa học 10 - Sách Kết nối tri thức Bài 2: Nguyên tố hóa họcBài tập trung bình

{"common":{"save":0,"post_id":"6192","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5453","mon_id":"1158798","chapter_id":"1158799","post_id":"6192","question":" Nguyên t\u1eed $_{13}^{27}Al$<\/span>  có :<\/p>","options":["A. 13p, 13e, 14n.","B. 13p, 14e, 14n ","C. 13p, 14e, 13n.","D. 14p, 14e, 13n "],"correct":"1","level":"2","hint":"","answer":"\u0110áp án \u0111úng là:  A<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"147","test":"0","date":"2022-09-06 02:50:42","option_type":"txt","len":2},{"id":"5454","mon_id":"1158798","chapter_id":"1158799","post_id":"6192","question":"Nguyên t\u1eed calcium có kí hi\u1ec7u là $_{20}^{40}Ca$<\/span> . Phát bi\u1ec3u nào sau \u0111ây sai ?<\/p>","options":["A. Nguyên t\u1eed Ca có 2 electron l\u1edbp ngoài cùng.","B. S\u1ed1 hi\u1ec7u nguyên t\u1eed c\u1ee7a Ca là 20.","C. Calcium \u1edf ô th\u1ee9 20 trong b\u1ea3ng tu\u1ea7n hoàn.","D. T\u1ed5ng h\u1ea1t c\u01a1 b\u1ea3n c\u1ee7a calcium là 40. "],"correct":"4","level":"2","hint":"","answer":"\u0110áp án \u0111úng là: D. T\u1ed5ng h\u1ea1t c\u01a1 b\u1ea3n c\u1ee7a calcium là 40.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"147","test":"0","date":"2022-09-06 02:52:05","option_type":"txt","len":3},{"id":"5455","mon_id":"1158798","chapter_id":"1158799","post_id":"6192","question":"Nguyên t\u1eed $_7^{14}N$<\/span> có <\/p>","options":["A. 7e, 7p, 7n","B. 7e, 14p, 7n","C. 14e, 7p, 7n","D. 7e, 7p, 14n"],"correct":"1","level":"2","hint":"","answer":"\u0110áp án \u0111úng là: A<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"147","test":"0","date":"2022-09-06 02:53:30","option_type":"txt","len":1}]}