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| धातु | अयस्क |
|---|---|
| $1$. सोडियम | $a$. बेराइट |
| $2$. पोटैशियम | $b$. कार्नालाइट |
| $3$. बेरियम | $c$. बेरिल |
| $4$. बेरिलियम | $d$. चिली साल्टपीटर |
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