2-NAZORAT ISHI.
1. quyidagi rasmdan foydalanib xromning o’rtacha molekulyar massasini toping.
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2.Tartib raqami 20 bo’lgan elementning electron konfiguratsiyasini yozing.
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3.2,25gr Na2O dagi atomlar soni nechta?
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Kompetentlikni aniqlash uchun materiallar:
4.Dorivor o’simliklarda qanday elementlar uchrashini eshitgansiz?
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5.Biz kundalik turmushimizda iste’mol qiladigan tuzimizni necha % ini Na elementi tashkil etadi?
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Baho________ O`qituvchi: _______ _____________________
3-NAZORAT ISHI.
1. NH4+ ushbu ionda donor qaysi element?
A)azot B)vodorod S)donor- akseptor bog’ yo’q D)A va B
2.Fosforning yuqori oksidlanish darajasi nechaga teng?
A)+6 B)+5 S)+3 D)+7
3.Elektron konfiguratsiyasi 1s2 /2s2 2p6/ 3s2 bo’lgan elementni aniqlang.
A)Kaliy B)magniy S)kalsiy D)stronsiy
4.Ushbu rasmda qaysi elementni atom tuzilish modeli keltirilgan?
A)Li B)Be S)B D)C
5.Elektromanfiylik qiymatlari bir xil bo’lgan element atomlaridan iborat moddalarni toping.
A)H2,NaCl B)H2,O2 S)N2O,HCl D)H2O, HCl
6.Kovalent bog’lanishni nechta turi bor?
A)2ta:ion va metal. S)2ta:donor-akseptor, qutbli.
B)2ta:qutbli va qutbsiz. D)3ta:metal, donor-akseptor, qutbli
7.Donor-akseptor bog’lanishli moddalar berilgan qatorni toping.
A)NH4+,H 2O B) NH4+,H 3O+ S)NH3, NH4+ D) H 2O , NH3
8.Atom kristall panjaralar berilgan qatorni toping.
A)NaCl,KNO3 B)olmos, grafit S)Na,Mg D)CO,H2O
9.Osh tuzini kristall tuzilishi qanday?
A)tetraedr B)to’rtburchak S)kubsimon D)aylana
10.Cr atomini d-pog’onasida nechta bo’sh orbital bor?
A)1ta B)bo’sh orbital yo’q S)2ta D)3ta
11.Fosforning nisbiy atom massasi 31ga teng uning tartib raqami 15 ekanligini bilgan holda, fosfor atomi yadrosidagi neytronlar sonini toping.
A)15 B)16 S)17 D)20
12. Alyuminiy gidrofosfatning grafik formulasidagi δ- va π bog’lar sonini toping:
A)21 va3 B)18 va 6 C)15va9 D)21 va 6
13. Ion bog’lanishga ega bo’lgan oksidlarni tanlang.
1. xlor (V) oksid 2. oltingugurt (VI) oksid 3. xrom (III) oksid 4. seziy oksid 5. fosfor (V) oksid 6. kalsiy oksid
A) 1,4,6 B) 2,4,6 C) 3,4,6 D) 4,5,6
14.Elektromanfiylik tushunchasini fanga kiritgan olim kim?
A)L.Poling B)E.Rezerford S)Bekkeril D)Lavuaze
15.Elektromanfiyligi eng katta bo’lgan element qaysi?
A)Li B)P S)F D)Ca
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Baho________ O`qituvchi: _______ _____________________
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