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Chemistry > Module 2, Section 2 > Flashcards

Module 2, Section 2 Flashcards

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1
Q

What is the composition of the s sub-shell?

A

1 orbital, 2 electrons, spherical shape.

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2
Q

What is the composition of the p sub-shell?

A

3 orbitals, 8 electrons, dumbbell shape.

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3
Q

What is the composition of the d sub-shell?

A

5 orbitals, 18 electrons

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4
Q

What is the composition of the f sub-shell?

A

7 orbitals, 32 electrons.

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5
Q

How is boron different?

A

6 electrons in outer shell for example boron trifluoride

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6
Q

How is sulfur different?

A

12 in outer shell,for example sulfur hexafluoride. Its known as ‘expanding the octet’

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7
Q

KEY DEFINITIONS Ionic bond and covalent bond.

A

Ionic - strong electrostatic attraction between oppositely charged ions
Covalent - strong electrostatic attraction between shared pair of electrons and nuclei of bonded atoms.

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8
Q

Electron configuration of Ca

A

1s2 2s2 2p6 3s2 3p6 4s2

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9
Q

Electron configuration of K

A 
1s2
2s2
2p6
3s2
3p6
4s1
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10
Q

Electron configuration of Kr

A 
1s2
2s2
2p6
3s2 
3p6 
3d10
4s2
4p6
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11
Q

Electron configuration of 02-

A

1s2
2s2
2p6

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12
Q

What is the shape and bond angel of BeI2?

A

Linear, 180 degrees

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13
Q

What is the shape and bond angle of BCL3?

A

Trigonal planar, 120 degrees

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14
Q

What is the shape and bond angle of SiH4?

A

Tetrahedral, 109.5 degrees

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15
Q

What is the shape and bond angle of H2C=0?

A

Trigonal planar, 120 degrees

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16
Q

What is the shape and bond angle of CS2?

A

Linear, 180 degrees

17
Q

What is the shape and bond angle of NH3?

A

Trigonal pyramidal, 107 degrees

18
Q

What is the shape and bond angle of H2O?

A

Non-linear, 104.5 degrees

19
Q

KEY DEFINITION

Electronegativity

A

An atom’s ability to attract the shared pair of electrons from a covalent bond

20
Q

How does an induced dipole-dipole interaction come about?

A

1) At any one moment, electrons in an atom are likely to be more to one side than another, creating a temporary dipole.
2) This dipole can cause another in the opposite direction in a neighbouring atom, and this process continues like a domino roll.

21
Q

What is hydrogen bonding?

A

A bond between hydrogen and either nitrogen, oxygen or fluorine.
Hydrogen has a high charge density and fluorine, nitrogen and oxygen are very electronegative.
The bond is very polarised, forming between a hydrogen on one molecule and a lone pair of electrons on another.

Chemistry (10 decks)

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