Navoiy shahar 16-sonli ayrim fanlar chuqur o’rganiladigan ixtisoslashgan maktabi 8-“ ”­­­­­ sinf o’quvchisi

Mavzu: Atomlarning yadro tarkibi. Izotoplar. Izobarlar.Atom elektron qavatlarining tuzilishi. Energetik pog‘onachalar. Kimyoviy elementlarning davriy jadvali. Kichik davrdagi elementlarning atom tuzilishi. Katta davrdagi elementlarning atom tuzilishi.Elementlarning davriy jadvalidagi o‘rni va atom tuzilishiga qarab tavsiflash. Davriy qonun va davriy qonunning ahamiyati.
Nazorat shakli:Yozma ish.
I-variant.
1.Ca elementining necha %ini plar tashkil etadi?
2. quyidagi rasmdan foydalanib xlorning o’rtacha molekulyar massasini toping.
3.Tartib raqami 15 bo’lgan elementning electron konfiguratsiyasini yozing
Kompetentlikni aniqlash uchun materiallar:
4.Inson organizmida uchraydigan qanday elementlarni bilasiz?
5.Siz eng ko’p eshitgan elementlar qaysi pog’onachaga kiradi?
II-variant
1. quyidagi rasmdan foydalanib xromning o’rtacha molekulyar massasini toping.

2.Tartib raqami 20 bo’lgan elementning electron konfiguratsiyasini yozing.

3.2,25gr Na₂O dagi atomlar soni nechta?
Kompetentlikni aniqlash uchun materiallar:
4.Dorivor o’simliklarda qanday elementlar uchrashini eshitgansiz?
5.Biz kundalik turmushimizda iste’mol qiladigan tuzimizni necha % ini Na elementi tashkil etadi?

Yechish:
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Sana___________________________