Why is radium very costly?

Why is radium very costly?
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It is found in very small quantity
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I own a pizza joint. Is there any way to monitor it when I am away? I donot wish to use CCTv as it's very costly...

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The Himalayan region is poor in mineral resources because (a) it is made up of crystalline rocks (b) displacement of rock strata has disturbed the arrangement of rocks and made it complex (c) the climatic conditions are not suitable for exploitation of minerals (d) the terrain makes exploitation of minerals difficult and very costly due to transport difficulties

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The Himalayan region is poor in mineral resources because: [IAS 2004] (a) it is made of crystalline rocks (b) the displacement of rock strata has disturbed the arrangement of rock and made it complex (c) the climatic conditions are not suitable for exploitation of minerals (d) the terrain makes exploitation of minerals difficult and very costly due to transport difficulties

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“U.S. entry into the war in Vietnam marked a new phase that proved costly to Vietnamese as well as to the Americans.” -SST 10th

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Which method of raising chickens is less costly ?

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Why was the campagne for president in 2004 the most costly in history?

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Are portable wireless sound systems costly?

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is a toshiba dlp lamp energy costly to have and use?

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Is denture repair a costly thing to do?

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How costly is a 55 gallon drum?

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. A mineral is termed as 'ore', if (A) A metal can be economically extracted from it (B) It contains ≥ 40% metal (C) The metal present in it is costly (D) All (A), (B) and (C)

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