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Out of the following element, which one has the least number of electrons in its M-shell?
- a)Sc
- b)Mn
- c)K
- d)Ni
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Out of the following element, which one has the least number of electr...
K = 19 = 1s²2s22p63s23p6s1
3s23p6 = m-shell
Hence, k has only 8 electrons in the M shell.
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Out of the following element, which one has the least number of electr...
Explanation:
Electron Configuration:
- The electron configuration of an atom specifies how the electrons are distributed among the various atomic orbitals.
- The M-shell is the third outermost shell in an atom, following the K and L shells.
Number of Electrons in M-Shell:
- The maximum number of electrons that can be accommodated in the M-shell is 18.
- The number of electrons in the M-shell is determined by the position of the element in the periodic table and its atomic number.
Analysis of Elements:
a) Scandium (Sc) has an atomic number of 21 and electron configuration of [Ar] 3d1 4s2. It has 2 electrons in the M-shell.
b) Manganese (Mn) has an atomic number of 25 and electron configuration of [Ar] 3d5 4s2. It has 5 electrons in the M-shell.
c) Potassium (K) has an atomic number of 19 and electron configuration of [Ar] 4s1. It has 1 electron in the M-shell.
d) Nickel (Ni) has an atomic number of 28 and electron configuration of [Ar] 3d8 4s2. It has 8 electrons in the M-shell.
Conclusion:
- Among the given elements, Potassium (K) has the least number of electrons in its M-shell with only 1 electron present.
Electron Configuration:
- The electron configuration of an atom specifies how the electrons are distributed among the various atomic orbitals.
- The M-shell is the third outermost shell in an atom, following the K and L shells.
Number of Electrons in M-Shell:
- The maximum number of electrons that can be accommodated in the M-shell is 18.
- The number of electrons in the M-shell is determined by the position of the element in the periodic table and its atomic number.
Analysis of Elements:
a) Scandium (Sc) has an atomic number of 21 and electron configuration of [Ar] 3d1 4s2. It has 2 electrons in the M-shell.
b) Manganese (Mn) has an atomic number of 25 and electron configuration of [Ar] 3d5 4s2. It has 5 electrons in the M-shell.
c) Potassium (K) has an atomic number of 19 and electron configuration of [Ar] 4s1. It has 1 electron in the M-shell.
d) Nickel (Ni) has an atomic number of 28 and electron configuration of [Ar] 3d8 4s2. It has 8 electrons in the M-shell.
Conclusion:
- Among the given elements, Potassium (K) has the least number of electrons in its M-shell with only 1 electron present.
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Out of the following element, which one has the least number of electrons in its M-shell?a)Scb)Mnc)Kd)NiCorrect answer is option 'C'. Can you explain this answer?
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