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Ketma-ketlik

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81
Qo'shilgan muammo (15/ 20)
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public quiz

muammo 1

Tanlov turi

What is the correct electron configuration for magnesium (Mg) with atomic number 12?

  • 1s2 2s2 2p6 3s2
  • 1s2 2s2 2p6 3s1
  • 1s2 2s2 2p6 3p1
  • 1s2 2s2 2p6 3d2

muammo 2

Tanlov turi

Which element is located in Period 3 and Group VI A?

  • Phosphorus (Atomic number 15)
  • Sulfur (Atomic number 16)
  • Chlorine (Atomic number 17)
  • Argon (Atomic number 18)

muammo 3

Tanlov turi

How many valence electrons does an atom of chlorine (Atomic number 17) have?

  • 5
  • 6
  • 7
  • 8

muammo 4

Tanlov turi

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p1?

  • Sodium (Na): Atomic Number 11
  • Magnesium (Mg): Atomic Number 12
  • Aluminum (Al): Atomic Number 13
  • Silicon (Si): Atomic Number 14

muammo 5

Tanlov turi

What is the group number for elements with a full outermost shell in the periodic table?

  • Group I A
  • Group VI A
  • Group VII A
  • Group VIII A

muammo 6

Tanlov turi

Which of the following elements is an alkali metal?

  • Lithium (Li)
  • Calcium (Ca)
  • Aluminum (Al)
  • Argon (Ar)

muammo 7

Tanlov turi

What is the maximum number of electrons that the p-subshell can hold?

  • 2
  • 6
  • 8
  • 10

muammo 8

Tanlov turi

Which element is located in Period 2 and has 4 valence electrons?

  • Boron (B): Atomic number 5
  • Carbon (C): Atomic number 6
  • Nitrogen (N): Atomic number 7
  • Oxygen (O): atomic number 8

muammo 9

Tanlov turi

What is the atomic number of potassium (K) with electron configuration 2 8 8 1?

  • 21
  • 20
  • 19
  • 18

muammo 10

Tanlov turi

How many electrons can the d-subshell hold?

  • 2
  • 6
  • 10
  • 14

muammo 11

Tanlov turi

Which element is located in Group II A and Period 4?

  • Magnesium (Mg): Atomic number 12
  • Calcium (Ca): Atomic number 20
  • Strontium (Sr): Atomic number 38
  • Barium (Ba): Atomic number 56

muammo 12

Tanlov turi

What is the correct electron configuration for sulfur (S) with atomic number 16?

  • 1s2 2s2 2p6 3s2 3p4
  • 1s2 2s2 2p6 3s2 3p3
  • 1s2 2s2 2p6 3s2 3p5
  • 1s2 2s2 2p6 3s2 3p6

muammo 13

Tanlov turi

Which of the following elements belongs to the noble gases?

  • Hydrogen
  • Oksigen
  • Fluorin
  • Neon

muammo 14

Tanlov turi

How many periods are there in the periodic table?

  • 7
  • 8
  • 10
  • 18

muammo 15

Tanlov turi

What is the group number of the halogens in the periodic table?

  • IV A
  • V A
  • VI A
  • VII A
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