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The d & f Block Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
MCQ
The transition metal used in $X-$rays tube is:
  • ✓
    $Mo$
  • B
    $Ta$
  • C
    $Tc$
  • D
    $Pm$
✓

Answer

Correct option: A.
$Mo$
Among given metals, molybdenum is used in $X-$rays tube. In medical $X-$ray tubes the target is usually tungsten or a more crack$-$resistant alloy of rhenium $(5\%)$ and tungsten $(95\%),$ but sometimes molybdenum is used for more specialized applications, such as when softer $X-$rays are needed as in mammography.

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