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The common feature (s) of Rb+, Kr and Br– is /are that they:
- a)Have same number of valence electrons.
- b)Have same magnitude of effective nuclear charge.
- c)Have same magnitude of first Ionization potential.
- d)Are isoelectronic species.
Correct answer is option 'A,D'. Can you explain this answer?
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Most Upvoted Answer
The common feature (s) of Rb+, Kr and Br– is /are that they:a)Ha...
Explanation:
The given elements Rb, Kr, and Br belongs to different groups of the periodic table. However, they share some common features, which are explained below.
Valence Electrons:
Valence electrons are the outermost electrons of an atom, which participate in chemical bonding. The number of valence electrons in an atom depends on its position in the periodic table. Rb, Kr, and Br have 1, 8, and 7 valence electrons respectively. Although they have different valence electrons, they all have the same number of valence electrons, i.e., 8. Hence, option A is correct.
Isoelectronic Species:
Isoelectronic species are atoms or ions that have the same number of electrons. Rb, Kr, and Br are isoelectronic species since they all have 36 electrons. This is because Rb has 37 electrons, Kr has 36 electrons, and Br has 35 electrons. By gaining or losing electrons, they can form ions with different charges, but they will still have the same number of electrons. Hence, option D is correct.
Effective Nuclear Charge:
Effective nuclear charge is the net positive charge experienced by an electron in an atom. It depends on the number of protons in the nucleus and the shielding effect of inner electrons. Rb, Kr, and Br have different effective nuclear charges since they have different numbers of electrons and different electron configurations. Hence, option B is not correct.
First Ionization Potential:
First ionization potential is the energy required to remove one electron from an atom. Rb, Kr, and Br have different first ionization potentials since they have different numbers of electrons and different electron configurations. Hence, option C is not correct.
Therefore, the correct options are A and D.
The given elements Rb, Kr, and Br belongs to different groups of the periodic table. However, they share some common features, which are explained below.
Valence Electrons:
Valence electrons are the outermost electrons of an atom, which participate in chemical bonding. The number of valence electrons in an atom depends on its position in the periodic table. Rb, Kr, and Br have 1, 8, and 7 valence electrons respectively. Although they have different valence electrons, they all have the same number of valence electrons, i.e., 8. Hence, option A is correct.
Isoelectronic Species:
Isoelectronic species are atoms or ions that have the same number of electrons. Rb, Kr, and Br are isoelectronic species since they all have 36 electrons. This is because Rb has 37 electrons, Kr has 36 electrons, and Br has 35 electrons. By gaining or losing electrons, they can form ions with different charges, but they will still have the same number of electrons. Hence, option D is correct.
Effective Nuclear Charge:
Effective nuclear charge is the net positive charge experienced by an electron in an atom. It depends on the number of protons in the nucleus and the shielding effect of inner electrons. Rb, Kr, and Br have different effective nuclear charges since they have different numbers of electrons and different electron configurations. Hence, option B is not correct.
First Ionization Potential:
First ionization potential is the energy required to remove one electron from an atom. Rb, Kr, and Br have different first ionization potentials since they have different numbers of electrons and different electron configurations. Hence, option C is not correct.
Therefore, the correct options are A and D.
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The common feature (s) of Rb+, Kr and Br– is /are that they:a)Ha...
Both have 8 valence e and total electron also same 36
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