Question

How many protons does an atom of cobalt have? A) 27 B) 29 C) 32 D) 59 How many neutrons does an atom of cobalt have? A) 27 B) 29 C) 31 D) 59 Which of the following is not a property of most metals? A) solid at room temperature B) have luster C) conduct heat and electricity well D) are often found in the gas phase

          How many protons does an atom of cobalt have? 
    A) 27 
    B) 29 
    C) 32 
    D) 59 

    How many neutrons does an atom of cobalt have? 
    A) 27 
    B) 29 
    C) 31 
    D) 59 

    Which of the following is not a property of most metals? 
    A) solid at room temperature 
    B) have luster 
    C) conduct heat and electricity well 
    D) are often found in the gas phase
        
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Chemistry: Structure and Properties
Chemistry: Structure and Properties
Nivaldo Tro 2nd Edition
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How many protons does an atom of cobalt have? A) 27 B) 29 C) 32 D) 59 How many neutrons does an atom of cobalt have? A) 27 B) 29 C) 31 D) 59 Which of the following is not a property of most metals? A) solid at room temperature B) have luster C) conduct heat and electricity well D) are often found in the gas phase
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Transcript

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00:01 The question is, cobalt has an atomic mass of 59, mass of cobalt, 59 and an atomic number of 27.
00:18 So atomic number of cobalt is 27.
00:28 So the number of protons equals to the number of electrons, number of electrons, which is equal to the number of electrons, which is equal to the atomic.
01:00 Number and here it is 27 then the number of neutrons is defined as the mass number minus atomic number then it is 32 so it is asked that they contain whether they contain more neutrons than protons yes the option is correct as the number of neutrons is greater than number of protons...
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