
Katta va kichik davr elementlari
Authored by hayot m
Chemistry
8th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Quyidagi davrlardan qaysi biri kichik davr hisoblanadi?
4-davr
3-davr
5-davr
6-davr
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. Katta davrlar nechta qatorni o‘z ichiga oladi?
1
2
3
4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3. Quyidagi elementlardan qaysi biri 4-davrda joylashgan d-element hisoblanadi?
K (kaliy)
Ca (kalsiy)
Sc (skandiy)
Kr (kripton)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. 1-, 2-, 3-davrlarda nechta element bor?
2, 8, 8
2, 8, 8,2
2, 8, 8, 6
2, 8, 8, 18
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5. Quyidagi ta’riflardan qaysi biri “guruh” atamasini to‘g‘ri ifodalaydi?
Elementlarning gorizontal qatori
O‘xshash xossalarga ega bo‘lgan elementlarning vertikal qatori
Metallik xossasi ortib boruvchi elementlar ketma-ketligi
Elektron pog‘onalar soni teng bo‘lgan elementlar to‘plami
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vodorod nega I va VII guruhga mansub bo‘lishi mumkin?
Yadrodagi protonlar soni 1 bo‘lgani uchun
Metallik xossasi juda kuchli bo‘lgani uchun
Inert gazlar bilan o‘xshash bo‘lgani uchun
Oksidida valentligi 1, tashqi qavatida 1 elektron bo‘lgani uchun
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quyidagi elementlar qaysi tartibda metallik xossasining kuchayib borishini ko‘rsatadi?
Li → Na → K → Rb → Cs
F → Cl → Br → I
O → N → C → B
Ne → Ar → Kr → Xe
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