Nguyên tử Hiđrô được kích thích để electron chuyển lên quỹ đạo M. Khi nguyên tử phát xạ có thể tạo ra những vạch quang phổ nào sau đây?

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Let’s go to the airport now just in case her plane will arrive early.

• Find a mistake in the four underlined parts of the sentence and correct it:

  The library is divided in two sections.

• Find a mistake in the four underlined parts of the sentence and correct it:

  She apologized and said that she won’t do it again.

• Find a mistake in the four underlined parts of the sentence and correct it:

  She said the doctor that she was unable to sleep.

• Choose the word that has the underlined part pronounced differently from the rest:

  loud                           sound                         scout                       bought

• Choose the word whose stress is on the second syllable:

  temperature                       elevator                      luxuriant                     alternative

• Choose the best answer for the following sentence:

  John and Lisa have a lot in ___________ with each other.
  
  

• Choose the best answer for the following sentence:

  You can only drive if you’ve got a ____________ license.
  
  

• Choose the best answer for the following sentence:

  What does D.C. in Washington D.C. _____________ ?
  
  

• Choose the best answer for the following sentence:

  It’s Winnie’s graduation tomorrow. She has finally _____________ her dream.