Science, asked by munnu6370, 1 year ago

Why does chromium have a high melting pt comparedmanganese?

Answers

Answered by MacTavish343
3
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Electronic configuration of Cr 1s2,2s2,2p6,3s2,3p6,3d5,4s1

Electronic configuration of Mn 1s2,2s2,2p6,3s2,3p6,3d5,4s2

The high melting points of these metals are attributed to the involvement of greater number of electrons from (n-1)d in addition to the ns electrons in the metallic bonding. In Cr number of unpaired electrons are more than the Mn, so melting point of Cr  is more while in Mn number of unpaired are less so melting point is less. This is due to symmetry in the crystal lattice due to presence of more no. of unpaired electron which is responsible for higher melting point.

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