Easy
If the atomic number of element $X$ is $7,$ the best electron dot symbol for the element is
- A$X\,.$
- B$.\,X\,.$
- C$.\,\mathop X\limits_.^. \,:$
- D$:\,\mathop X\limits_{.}^{.} \,.$
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Similar Questions
The quantum number which explains the line spectra observed as doublets in the case of hydrogen and alkali metals,and doublets and triplets in the case of alkaline earth metals is:
$Fe$ (atomic number $= 26$) atom has the electronic arrangement:
Easy
View SolutionIn the following pairs,which orbital experiences greater nuclear attraction?
$(i)$ $4f$ and $5d$ $(ii)$ $4d$ and $5s$ $(iii)$ $7s$ and $5f$ $(iv)$ $7p$ and $5p$
$(v)$ $3d$ and $3f$
$(i)$ $4f$ and $5d$ $(ii)$ $4d$ and $5s$ $(iii)$ $7s$ and $5f$ $(iv)$ $7p$ and $5p$
$(v)$ $3d$ and $3f$
Easy
View SolutionTwo electrons occupying the same orbital are distinguished by
Number of completely filled orbitals in xenon atom $(Xe)$ is
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