Chemistry at Medical University Of Sofia | Flashcards & Summaries

Lernmaterialien für Chemistry an der Medical University of Sofia

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Which element has the largest atomic radius ?

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Br 

Bromine

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Which of the following ions has the smallest ionic radius ?

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Ca²⁺

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

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B, Be, Li, Na 

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

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Al3P2

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

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1,2 

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A π-bond is the result of ?

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 overlap of two p-orbitals

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Which of the following elements has the lowest ionization energy ?

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Cs 


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

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They are named the alkaline earth metals 

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Which of the following has the largest atomic radius ?

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Iodine

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The nucleus of a hydrogen atom consists of ?

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only one proton 

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Q:

Which element has the largest atomic radius ?

A:

Br 

Bromine

Q:

Which of the following ions has the smallest ionic radius ?

A:

Ca²⁺

Q:

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

A:

B, Be, Li, Na 

Q:

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

A:

Al3P2

Q:

Which of the following is NOT true for the halogens ?

A:

the electronic configuration of their outermost electrons is ns²np⁶

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Q:

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

A:

1,2 

Q:

A π-bond is the result of ?

A:

 overlap of two p-orbitals

Q:

Which of the following elements has the lowest ionization energy ?

A:

Cs 


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:

Which of the following has the largest atomic radius ?

A:

Iodine

Q:

The nucleus of a hydrogen atom consists of ?

A:

only one proton 

Chemistry

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