Chemistry an der Medical University Of Sofia | Karteikarten & Zusammenfassungen

Lernmaterialien für Chemistry an der Medical University of Sofia

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TESTE DEIN WISSEN

Which element has the largest atomic radius ?

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TESTE DEIN WISSEN

Br 

Bromine

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TESTE DEIN WISSEN

Which one of the formulas for ionic compounds below is incorrect ?

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Al3P2

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TESTE DEIN WISSEN

Which of the following ions has the smallest ionic radius ?

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Ca²⁺

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TESTE DEIN WISSEN

A π-bond is the result of ?

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TESTE DEIN WISSEN

 overlap of two p-orbitals

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TESTE DEIN WISSEN

What is the type of chemical bond between an alkaline and a halogen element ?

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ionic 

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TESTE DEIN WISSEN

A triple bond contains ............. σ - bond(s) and π - bond(s)

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1,2 

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TESTE DEIN WISSEN

Which of the following is NOT true for the halogens ?

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the electronic configuration of their outermost electrons is ns²np⁶

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TESTE DEIN WISSEN

Which is the correct order for the listed atoms with increase of the atomic radius ?

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TESTE DEIN WISSEN

B, Be, Li, Na 

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TESTE DEIN WISSEN

The electronic configuration of Cu2+ ion is ?

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TESTE DEIN WISSEN

3d9 4s0

Cations are produced when electrons are removed from neutral atoms in their ground state. To write the electronic configurations for cation first, one should write an electronic configuration of neutral atom in its ground state. After the electrons have to be removed from the outermost shell. Electronic configuration of the Cu is 3d104s1 and as the copper ion has two electrons less, therefore the Cu2+ ion configuration is: 3d94s0.

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TESTE DEIN WISSEN

Which of the following is NOT true for the Group 1A elements ?

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TESTE DEIN WISSEN

They are named the alkaline earth metals 

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TESTE DEIN WISSEN

What is the ground electronic state of Mn²⁺ ?

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TESTE DEIN WISSEN

1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵

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TESTE DEIN WISSEN

Which of the following pairs of elements and valence electrons is incorrect ?

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S- 5

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Q:

Which element has the largest atomic radius ?

A:

Br 

Bromine

Q:

Which one of the formulas for ionic compounds below is incorrect ?

A:

Al3P2

Q:

Which of the following ions has the smallest ionic radius ?

A:

Ca²⁺

Q:

A π-bond is the result of ?

A:

 overlap of two p-orbitals

Q:

What is the type of chemical bond between an alkaline and a halogen element ?

A:

ionic 

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Q:

A triple bond contains ............. σ - bond(s) and π - bond(s)

A:

1,2 

Q:

Which of the following is NOT true for the halogens ?

A:

the electronic configuration of their outermost electrons is ns²np⁶

Q:

Which is the correct order for the listed atoms with increase of the atomic radius ?

A:

B, Be, Li, Na 

Q:

The electronic configuration of Cu2+ ion is ?

A:

3d9 4s0

Cations are produced when electrons are removed from neutral atoms in their ground state. To write the electronic configurations for cation first, one should write an electronic configuration of neutral atom in its ground state. After the electrons have to be removed from the outermost shell. Electronic configuration of the Cu is 3d104s1 and as the copper ion has two electrons less, therefore the Cu2+ ion configuration is: 3d94s0.

Q:

Which of the following is NOT true for the Group 1A elements ?

A:

They are named the alkaline earth metals 

Q:

What is the ground electronic state of Mn²⁺ ?

A:

1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵

Q:

Which of the following pairs of elements and valence electrons is incorrect ?

A:

S- 5

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