Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 General Science Chemistry Periodic Table

ଏକ ଉପାଦାନ X ର ବାହ୍ୟ କକ୍ଷପଥରେ ଚାରୋଟି ଇଲେକ୍ଟ୍ରନ୍ ଅଛି | ହାଇଡ୍ରୋଜେନ୍ ସହିତ ଏହାର ଯଗିକର ସୂତ୍ର କ’ଣ ହେବ?

1
X4H
2
X4H4
3
XH3
4
XH4
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