Chemistry-
General
Easy
Question
The configuration 1s2,2s2,2p5,3s1 shows:
- Excited state of
- Excited state of neon
- Excited state of fluorine
- Ground state of fluorine atom
The correct answer is: Excited state of neon
Related Questions to study
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The emission spectrum of hydrogen is found to satisfy the expression for the energy change.ΔE(in joules) such that ΔE=2.18× 10–18 
Where n1=1,2,3.....and n2=2,3,4 ......The spectral lines that correspond to Paschan series have:
The emission spectrum of hydrogen is found to satisfy the expression for the energy change.ΔE(in joules) such that ΔE=2.18× 10–18
Where n1=1,2,3.....and n2=2,3,4 ......The spectral lines that correspond to Paschan series have:
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Pair of isoelectronic species is:
Pair of isoelectronic species is:
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The charge of an electron is–1.6×10–19C. The value of free charge on Li+ ion will be–
The charge of an electron is–1.6×10–19C. The value of free charge on Li+ ion will be–
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An element have atomic weight 40 and its electronic configuration is1s2,2s2,2p6,3s2,3p6. Then its atomic number and number of neutrons will be-
An element have atomic weight 40 and its electronic configuration is1s2,2s2,2p6,3s2,3p6. Then its atomic number and number of neutrons will be-
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Which one pair of atoms or ions will have same configuration.
Which one pair of atoms or ions will have same configuration.
chemistry-General
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The electronic configuration of an element is1s2, 2s2,2p6,3s2,3p6,3d54s1. This represents its:
The electronic configuration of an element is1s2, 2s2,2p6,3s2,3p6,3d54s1. This represents its:
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Which of the following electronic configurations is not possible?
Which of the following electronic configurations is not possible?
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The number of unpaired electrons in Fe3+ (Z=26)are:
The number of unpaired electrons in Fe3+ (Z=26)are:
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An electron has kinetic energy2.8×10–23J. de-Broglie wavelength will be nearly: (m =9.1×10–31kg)
An electron has kinetic energy2.8×10–23J. de-Broglie wavelength will be nearly: (m =9.1×10–31kg)
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The equation Δx.Δp≥
The equation Δx.Δp≥
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The energy required to dislodge electron from excited isolated H-atom,(E1=–13.6eV)is:
The energy required to dislodge electron from excited isolated H-atom,(E1=–13.6eV)is:
chemistry-General
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The energy of a photon is calculated by:
The energy of a photon is calculated by:
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Highest energy will be absorbed to eject out the electron in the configuration:
Highest energy will be absorbed to eject out the electron in the configuration:
chemistry-General
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The mass of a neutron is of the order of-
The mass of a neutron is of the order of-
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The minimum real charge on any partical which can exist is:
The minimum real charge on any partical which can exist is:
chemistry-General
