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KCET2023Chemistryd and f Block Elements

Which of the following is correct with respect to melting point of a transition element?

Options

  1. AV > Cr
  2. BCr > Mn
  3. CMn > Fe
  4. DTi > V

Correct answer

B. Cr > Mn

Step-by-step solution

In general, the melting points of transition elements increases across a period from left to right due to increasing atomic number and the corresponding increase in effective nuclear charge. Among the elements mentioned in the options, chromium ( Cr ) has a higher melting point compared to manganese ( Mn ) . It is because chromium has a larger atomic number and a higher effective nuclear charge. Which leads to stronger metallic bonding and higher melting temperatures.

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