First 20 elements with attomic no. …

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First 20 elements with attomic no. name and symbol?

Posted by Ranveer Singh Sidhu 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Aman Kumar 4 years, 11 months ago

Hydrogen(H) hello Helium. (He) hii Lithium. (Li) listen Beryllium (Be) B Boron. (B) B Carbon. (C) C Nitrogen. (Ne) News Oxygen. (O) of Fluorine (F) Foren Neon. (Ne) nena Sodium. (Na) " Magnesium (Mg) mar gyi Aluminum. (Al) all Silicon. (Si) Sarcaari Phosphorus (P) private Sulphur. (S) school Chlorine. (Cl) closed Argon. (Ar) aur Potassium (K) kya Calcium (Ca) carna! Guys I have also mention an easy trick to learn these twenty elements, hope this help, hit a thanks button The trick is mention side by side, read its a story

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Kiran Kumari 4 years, 11 months ago

Helium (he)=2

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Kiran Kumari 4 years, 11 months ago

Hydrogen =1(H) Helium =2(Ge) Lithium =3(Li) Berelium=4(BE) Boron=5(B) Carbon=6(C) Nitrogen=7 (N) Oxygen=8 (o) Flourine=9(f) Neon=10(Ne) Sodium =11(Na) Magnesium=12(Mg) Aluminium =13(Al) Silicon =14(si) Phosphorus =15(ph) Sulphur=16 (s) Chlorine=17 (cl) Argon=18(Ar) Potassium=19 (k) Calcium =20 (ca)

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CBSE > Class 10 > Science