(a) What is the relationship between two elements X and Y whose atomic numbers are 18 and 20 respectively but their mass numbers remain same as 40 ? (b) Are their chemical properties same or different ? Explain and support your answer. (c) Which has more number of electrons Na or Na1? Why ?
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a) Both are isotopes of same element.
b) Different because their atomic numbers are different.
c) Na1 has more blnumber of electrons because its atomic number is 20.
b) Different because their atomic numbers are different.
c) Na1 has more blnumber of electrons because its atomic number is 20.
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a) they are isobars.
Isobars are two elements whose atomic numbers are different but have similar mass number. The nuclei of isobars have different number of neutrons.
b) No their chemical properties would be different since the chemical properties of an element depend upon electronic configuration more accurately on the no valence electrons which take part in chemical reaction. Different atomic number means different electronic configuration hence different chemical properties.
C) Na would have more electrons since Na1 would have been formed by loosing 1 electron
Hope this helps :D
Isobars are two elements whose atomic numbers are different but have similar mass number. The nuclei of isobars have different number of neutrons.
b) No their chemical properties would be different since the chemical properties of an element depend upon electronic configuration more accurately on the no valence electrons which take part in chemical reaction. Different atomic number means different electronic configuration hence different chemical properties.
C) Na would have more electrons since Na1 would have been formed by loosing 1 electron
Hope this helps :D
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