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Q.

Elements that occur naturally are-
 

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a

92

b

90

c

99

d

82

answer is D.

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Detailed Solution

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Naturally available elements are those that are freely available in nature.
- The periodic table contains 118 elements that do not occur naturally.
- Except for Technetium (43) and promethium, the naturally occurring elements are 1-92. (61).
- Indicates that the periodic table contains only 90 naturally occurring elements.
- Synthetic elements include technetium and promethium, which are created from uranium.

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