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Chapter 15 chen > Periodic Table > Flashcards

Periodic Table Flashcards

1
Q

What are groups

A

Vertical column of elements

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2
Q

Property of same group

A

Same valence electron and similar chemical properties

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3
Q

What are group 1 elements

A

Alkali metals

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4
Q

What are group 2 elements

A

Alkali earth metals

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5
Q

What are group 17 elements

A

Halogens

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6
Q

What are the patterns in periodic table

A

Number of electron shell is period number
Going down the group metallic properties increase

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7
Q

Other than metallic properties increasing down the group what else happens

A

Size of atom increase
Attraction weaker
Valance electron easily lost

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8
Q

Color and physical states of group 1

A

Shiny and silvery
Solid (mp is 25)

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9
Q

What is physical trend of group 1

A

Mp decrease down the group

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10
Q

Why does reactivity increase down group 1

A

Atomic size increase
So does electron shells
Attraction between positively cherger nucleus and valence electron decreases as it is further away

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11
Q

What is chemical formula of group 17

A

Diatomic

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12
Q

Color and state of fluorine

A

Pale yellow and gas

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13
Q

Colour and state of chlorine

A

Greenish yellow gas

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14
Q

Colour and state of bromine

A

Reddish brown liquid

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15
Q

Colour and state of iodine

A

Purple black solid

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16
Q

Color and state of astatine

A

Black solid

17
Q

Physical trend in group 17

A

Colour intensity increase down the group
Mp increase

18
Q

Why does mp increase down group 17

A

Covalent substances and exist as simple diatomic molecules
Mass of halo increase, intermolecular foa increase so more energy needed to overcome it

19
Q

Why reactivity decrease down 17

A

Atomic size of elements increase so more electron shells
Attraction between positively charged nucleus and valence electron decreases
Harder to attract

20
Q

Why reactivity decrease down 17

A

Atomic size of elements increase so more electron shells
Attraction between positively charged nucleus and valence electron decreases
Harder to attract

21
Q

Properties of group 18

A

Monatomic
Chemically unchanged
Low mp

Chapter 15 chen (20 decks)

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