Question

an atom of an element contain 11 electron its nucleus has 13 neutrons then find outs its atomic number and atomic weight

Answer 1

Answer:

16

Explanation:

Atomic number=No. of protons=No. of electrons in ground state(unchanged atom)

Atomic number=11=No. of protons

Atomic mass=no. of protons+no. of neutrons=13+11=27

For isotope no. of proton=11(same atomic number but different mass number are isotopes)

no. of electrons=11

no. of neutrons=14+2=16

Answer 2

Answer:

Atomic number of an atom of element $= 11$    

Atomic weight of an element $= 24amu$        

Explanation:

• Given,

Number of electrons in an atom of element $= 11 electrons$

Number of electrons in an atom of element  $= 13 neutrons$      

we know that,

• Atomic number = Number of electrons of a neutral atom

                           = Number of  protons of an atom of element

                            $=11$

• Atomic weight = Number of protons + Number of neutrons

                        $= 11 protons + 13 neutrons$

                        $=24amu$  

    Therefore, atomic number of an atom of element $= 11$    

       Atomic weight of an element $= 24amu$        

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