Each chemical element is characterized to the number of protons that an atom of that element contains, called its atomic number.

Câu hỏi liên quan

• There are some wild roses whose flowers smell sweetly.

• You’d better _______out with your friends as it is very dangerous in the evening when going alone.

•  Nowadays, Viet Nam doesn’t import many oil products ________ other countries.

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• Residents in some cities can call an electrical inspector to have the wiring in their house to be checked.

• Identify the underlined word/ phrase (A or B, C, D) that needs correcting to become an exact one: 

  We can (A) save (B) nature resources (C) by using (D) solar energy.

• Bronze, after being heated by a strong flame, will change color, especially when exposure to hydrogen.

• If the airplane ticket wasn’t expensive, I could fly to Singapore for my holidays.

• Find the ONE among the underlined and marked A, B, C, D in each of the following sentences that needs correcting:

  The time which we will have another discussion should be appointed as soon as possible.

• Linda being chosen as the most outstanding student on her campus made her parents very happy

• Choose the best option A, B, C or D to make meaningful sentence: "We have reliable _______ that a strike is planned next month."

• Find the mistake: As soon as you leave the room, don’t forget turning off the lights.

• Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

  How are you ________ on with your work? – It is Ok

• None two butterflies have exactly the same design on their wings

• Before the Industrial Revolution come to America, the vast majority of the population had lived in rural areas.

• Short-wave radios that can receive and transmit signals are used by pilots, the police, and amateur operator.

• Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

  Mahatma Gandhi fought for the rights of coloured people in general and the Indians ______.

• I’d rather you _____________a noise last night; I couldn’t get to sleep.

• Humus is formed during soil microorganisms decompose animal and plant material into usable elements by plants

• The police _    come here to arrest the thief.

• There is a widespread belief that the economical situation will improve.