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What is the electronic configuration of lithium? 3s2 3p6 d) 3s2 3p5
What is the electronic configuration of argon? 3s2 3p6 d) 3s2 3p5
What is the electronic configuration of chlorine? 3s2 3p6 d) 3s2 3p5
Which of the following ion can have the electronic configuration 1s2 2s2 2p6 3s2 3p6 3d6
In the question below, is given a statement followed by two conclusions numbered I and II. You have to assume everything in the statement to be true, then consider the two conclusions together and decide which of them logically follows beyond a reasonable doubt from the information given in the statement. Give answer: (A) If only conclusion I follows (B) If only conclusion II follows (C) If either I or II follows (D) If both I and II follow. STATEMENT: Sun consists of huge amount of Helium. Sun is a typical midsize star. CONCLUSION 1: Most midsize stars will have at least some Helium. CONCLUSION 2: Large stars have more helium as compared to smaller stars.
A 2.0 L flask holds 0.40 g of helium gas. If the helium is evacuated into a larger container while the temperature is held constant, what will the effect on the entropy of the helium be?
A→ 1s2 2s2 2p6 3s2 3p6 3d9 4s2 যৌগটি পর্যায় সারণির কোন গ্রুপে অবস্থিত? 
একটি মৌলের ইলেকট্রন বিন্যাস – 1s2 2s2 2p6 3s2 3p6 3d10  4s2  4p6  4d10 5s2 মৌলটি কোন গ্রুপের?
1s2 2s2 2p6 3s2 3p6 ইলেকট্রন বিন্যাস দেখা যায়-i. S2- এii. Fe2+ এiii. Se34 এনিচের কোনটি সঠিক?
x মৌলটির ইলেকট্রন বিন্যাস: 1s2 2s2 2p6 3s2 3p6 3d5 4s2 (সি. বো, '১৭] মৌলটি পর্যায় সারণির কোন গ্রুপে অবস্থিত?