Sodium and sodium ions:
* Are chemically same
*Have same number of electrons
*Have the same number of protons
*None of the above
Dear Student
Sodium is the neutral element denoted by Na having 11 protons and 11 electrons, whereas sodium ion or sodium cation is a charged specie having 11 protons and 10 electrons, as Na looses 1 electron to form the positive charge specie of Na+.
The neutral and the charged specie have different chemical properties due to the availability of different no. of electrons in their valence shell.
Thus, option 3 is correct. Na and Na+ have same no. of protons because no. of protons of an element does not change during the formation of it's respective ion.
Regards
Sodium is the neutral element denoted by Na having 11 protons and 11 electrons, whereas sodium ion or sodium cation is a charged specie having 11 protons and 10 electrons, as Na looses 1 electron to form the positive charge specie of Na+.
The neutral and the charged specie have different chemical properties due to the availability of different no. of electrons in their valence shell.
Thus, option 3 is correct. Na and Na+ have same no. of protons because no. of protons of an element does not change during the formation of it's respective ion.
Regards