nursing RRB Nursing Superintendent 2025 Mock Test General Science Chemistry Periodic Table

 ନିମ୍ନଲିଖିତ ମଧ୍ୟରୁ କେଉଁ ଉପାଦାନର ସର୍ବନିମ୍ନ ପରମାଣୁ ବସ୍ତୁତ୍ୱ ଅଛି?

1
 ନାଇଟ୍ରୋଜେନ୍
2
 ହିଲିୟମ 
3
 ଲିଥିୟମ 
4
 ହାଇଡ୍ରୋଜେନ୍
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