ธาตุ se เลข มวล ชื่อ, สัญลักษณ์, เลขอะตอม, ซีลีเนียม, Se, 34. G. อนุกรมเคมี · แชลโคเจน · หมู่, คาบ, บล็อก · 16, 4, p · ลักษณะ, gray, metallic luster. มวลอะตอม · 78.96 (3) กรัม/โมล. การจัด ...

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In 1934 the Commission recommended Ar Se 78 96 based on the chemical determinations This value was reaffirmed in 1969 when Ar Se 78 96 3 was  Name Selenium Symbol Se Atomic Number 34 Atomic Mass 78 96 amu Melting Point 217 0 C 490 15 K 422 6 F เลขอะตอม 34 หมู่ VIA คาบ 4 มวล 78 96 ชื่อละติน Selenium การจัดเรียงอิเล็กตรอน Ar 3d10 4s2 4p4 สถานะออกซิเดชัน 2 1 0 1 2 3 4 5 6  ซีลีเนียม Se เลขอะตอม 34 มวลอะตอม 78 971 เลขมวล หมู่ 16 คาบ 4 บล็อก โปรตอน 34 p นิวตรอน 46 n อิเล็กตรอน  ซีลีเนียม คุณสมบัติทั่วไป เลขอะตอม 34 มวลอะตอม 78 96 คุณสมบัติกายภาพ สถานะ แข็ง ความหนาแน่น 4 809 g cm คุณสมบัติอะตอม รัศมีอะตอม 120 pm รัศมีโควาเลนต์ 120 pm

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Customer reviews

4.9 out of 5 stars
525753 global ratings

Top reviews from the Thailand

  • super2591
    5.0 out of 5 starsVerified Purchase
    Atomic Weight of Selenium
    Reviewed in the Thailand on July 6, 2025
    ซีลีเนียม (Se) ; เลขอะตอม, 34. มวลอะตอม, 78.971. เลขมวล ; หมู่, 16. คาบ, 4. บล็อก ; โปรตอน, 34 p · นิวตรอน, 46 n · อิเล็กตรอน ...
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  • gamer5316
    1.0 out of 5 starsVerified Purchase
    Atomic Weight of Selenium
    Reviewed in the Thailand on July 17, 2025
    Name: Selenium ; Symbol: Se ; Atomic Number: 34 ; Atomic Mass: 78.96 amu ; Melting Point: 217.0 °C (490.15 K, 422.6 °F)
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  • super_8246
    1.0 out of 5 stars
    Selenium - Element information, properties and uses
    Reviewed in the Thailand on June 25, 2025
    ชื่อ, สัญลักษณ์, เลขอะตอม, ซีลีเนียม, Se, 34. G. อนุกรมเคมี · แชลโคเจน · หมู่, คาบ, บล็อก · 16, 4, p · ลักษณะ, gray, metallic luster. มวลอะตอม · 78.96 (3) กรัม/โมล. การจัด ...
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