Chemistry-
General
Easy
Question
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:
- n1=1 and n2=2,3,4
- n1=3 and n2=4,5,6
- n1=1 and n2=3,4,5
- n1=2 and n2=3,3,5
The correct answer is: n1=3 and n2=4,5,6
)n1=1andn2=infinity
Related Questions to study
chemistry-
Pair of isoelectronic species is:
Pair of isoelectronic species is:
chemistry-General
chemistry-
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–
chemistry-General
chemistry-
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-
chemistry-General
chemistry-
Which one pair of atoms or ions will have same configuration.
Which one pair of atoms or ions will have same configuration.
chemistry-General
chemistry-
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:
chemistry-General
chemistry-
Which of the following electronic configurations is not possible?
Which of the following electronic configurations is not possible?
chemistry-General
chemistry-
The number of unpaired electrons in Fe3+ (Z=26)are:
The number of unpaired electrons in Fe3+ (Z=26)are:
chemistry-General
chemistry-
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)
chemistry-General
chemistry-
The equation Δx.Δp≥
The equation Δx.Δp≥
chemistry-General
chemistry-
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
chemistry-
The energy of a photon is calculated by:
The energy of a photon is calculated by:
chemistry-General
chemistry-
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
chemistry-
The mass of a neutron is of the order of-
The mass of a neutron is of the order of-
chemistry-General
chemistry-
The minimum real charge on any partical which can exist is:
The minimum real charge on any partical which can exist is:
chemistry-General
chemistry-
Outer electronic configuration of the element of atomic number 24 is-
Outer electronic configuration of the element of atomic number 24 is-
chemistry-General