Trong các ion sau đây , ion nào không có cấu hình electron của khí hiếm

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Please, keep silent. You ____________ speak during the exam.
   

• Choose the best answer for the following sentence:

  You _____________ drive at more than 70 miles per hour in the UK.
   

• Choose the best answer for the following sentence:

  Yesterday, I had to cram all day for my French final. ______________, I did not get to sleep until after midnight.
   

• Choose the best answer for the following sentence:

  While hiking in Alaska, you have to keep an eye out for bears. If you see one, you _____________ approach it. It is dangerous.
   

• Choose the best answer for the following sentence:

  You do not have to be afraid of bear, ______________ educating yourself about the dangers can help keep you safe.
   

• Choose the best answer for the following sentence:

  You ____________ leave the table once you have finished your meal and politely excused yourself.
   

• Choose a word that has different stress pattern:

  entertainment                        information                        difficulty                      understanding

• Choose a word that has different stress pattern:

  swallow                    subject                     digest                    enough

• Choose a word that has different stress pattern:

  imagine                    important                     example                  wonderful

• Choose a word that has different stress pattern:

  different                      carefully                     holiday                  reviewer