Ermetova jamila ismailovna ermetov amirbek ismailovich karimova munisa maxsud qizi

marganets ikki oksidi– mnO 2 (marganets dioksidi) qimmatli oksidlovchi moddadir: asosan po'latga ishlov berish uchun ishlatiladi. Ramz: Mn; atom og'irligi: 54.938; atom raqami: 25; o'ziga xos tortishish: 20 ° C da 7.2.
manganese dioxide –a hard, brittle, grayish-white, metallic element, an oxide of which, MnO 2(manganese dioxide) is a valuable oxidizing agent: used chiefly as an alloying agent in steel to give it toughness. Symbol: Mn; atomic weight:54.938; atomic number: 25; specific gravity: 7.2 at 20°C.
margimush – 33 atom raqami kimyoviy elementi, mo'rt po'latdan kulrang metalloid.		arsenic –the chemical element of atomic number 33, a brittle steel-grey metalloid.