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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