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卡片总数: 24 张•内容版本: v4•公开卡包•更新时间: 8/1/2026

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#1
正面 (问题)

What is a covalent bond

背面 (解答)

Electrostatic attraction between the shared pair of electrons and the positive nuclei

#2
正面 (问题)

Ionic bond

背面 (解答)

An electrostatic attraction between positive ions and negative ions

#3
正面 (问题)

Metallic bond

背面 (解答)

An electrostatic attraction between positive ions and delocalised electrons

#4
正面 (问题)

What happens in coordinate bonding

背面 (解答)

Both electrons are donated from 1 atom to the empty orbital of another

#5
正面 (问题)

What is the shape of a simple molecule determined by

背面 (解答)

The electrons and bonds in it. This is because electron pairs repel each other and therefore try to get as far away as possible

#6
正面 (问题)

Shapes of simple covalent molecules 2 pairs of electrons

背面 (解答)

Linear molecule 180 degrees

#7
正面 (问题)

Shapes of simple covalent molecules 3 pairs of electrons

背面 (解答)

Trigonal planar 120 degrees

#8
正面 (问题)

Shapes of simple covalent molecules 4 pairs of electrons

背面 (解答)

Tetrahedral 109.5 degrees

#9
正面 (问题)

Shapes of simple covalent molecules 5 pairs of electrons

背面 (解答)

Trigonal bipyramidal 120 degrees & 90 degrees

#10
正面 (问题)

Shapes of simple covalent molecules 6 pairs of electrons

背面 (解答)

Octahedral (8 faces) 90 degrees

#11
正面 (问题)

What affects the shape of an atom

背面 (解答)

As well as bonding pairs of electrons repelling, any lone pairs that are around the central atom also affects the shape

#12
正面 (问题)

What repels more lone pairs or bonding pairs

背面 (解答)

Lone pairs repel more

#13
正面 (问题)

4 pairs of electron 3 bonding 1 lone pair

背面 (解答)

Pyramidal 107.5 degrees

#14
正面 (问题)

4 pairs of electrons 2 bonding pairs, 2 lone pairs ( e.g. H20)

背面 (解答)

V - shaped / bent 104.5 degrees

#15
正面 (问题)

5 pairs of electrons 4 bonding, 1 lone pair

背面 (解答)

Modified Trigonal bipyramid

#16
正面 (问题)

5 pairs 3 bonding, 2 lone pairs

背面 (解答)

T shaped

#17
正面 (问题)

6 pairs 4 bonding, 2 lone pairs

背面 (解答)

Square planar

#18
正面 (问题)

How to determine the shape

背面 (解答)

1) group number of central atom 2) number of bonding atoms 3) charge 4) add up and divide by 2 5) work out lone pairs , total - bonding

#19
正面 (问题)

What is electronegativity

背面 (解答)

The ability of an atom to attract the pair of electrons(/electron density) in a covalent bond towards itself

#20
正面 (问题)

What would happen with Cl2 due to electronegativity

背面 (解答)

Nothing would happen because there is no difference in electronegativity, so we have a non-polar covalent bond

#21
正面 (问题)

Ht would happen in HCL due to electronegativity

背面 (解答)

Chlorine is more electronegative that hydrogen , this is a polar bond

#22
正面 (问题)

What does electronegativity depend on

背面 (解答)

• nucleus charge • atomic radius • electron shielding

#23
正面 (问题)

What is the most electronegative element

背面 (解答)

F Fluorine

#24
正面 (问题)

How to increase electronegativity

背面 (解答)

More protons and a smaller radius increases attraction from the nucleus