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Chemistry > Chemical Periodicity > Flashcards

Chemical Periodicity Flashcards

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1
Q

What happens to atomic radius across a period?

A

NC increases as no. of protons increases + SE is relatively constant as e- are added to the same valence shell so there is no change to the no. of inner shell e- –> Increase in ENC –> stronger attraction between the nucleus and the valence e-

valence e- pulled closer to the nucleus –> atomic radius decreases across a period

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2
Q

What happens to atomic radius down a group?

A

NC increases as no. of protons increases + shielding effect increase as no. of inner e- increase –> EMC unchanged

Distance between nucleus and valence e- increases due to increase in no. of e- shells –> weaker attraction between nucleus and valence e- –> atomic radius increases down a group

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3
Q

What happens to ionic radius across a period?

A
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4
Q

What happens to ionic radius down a group?

A
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5
Q

What happens to 1st I.E. across a period?

A
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6
Q

What happens to 1st I.E. down a group?

A
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7
Q

What happens to reducing strength of Group 1 metals down the group?

Proportionatal to reactivity (eg. react slowly/quickly/explosively)

A
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8
Q

What happens to electronegativity across a period?

A
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9
Q

What is the structure, bonding and nature of the oxide of Na?

Na2O

A

Structure: Giant ionic structure
Bonding: Ionic bonding
Nature: Basic oxide

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10
Q

What is the structure, bonding and nature of the oxide of Mg?

MgO

A

Structure: Giant ionic structure
Bonding: Ionic bonding
Nature: Basic oxide

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11
Q

What is the structure, bonding and nature in the oxide of Si?

SiO2

A

Structure: Giant molecular structure
Bonding: Covalent
Nature: Acidic oxide

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12
Q

What is the structure, bonding and nature of the oxide of Al?

Al2O3

A

Structure: Giant ionic structure
Bonding: Ionic with covalent character
Nature: Amphoteric oxide

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13
Q

What is the structure, bonding and nature of the oxide of P?

P4O10

A

Structure: Simple molecular structure
Bonding: Covalent
Nature: Acidic oxide

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14
Q

What is the structure, bonding and nature of the oxide of S?

A

Structure: Simple molecular structure
Bonding: Covalent
Nature: Acidic oxide

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15
Q

Write the equation of Na2O with water (with state symbols) and state its pH.

A

Na2O (s) + H2O → 2NaOH (aq)

pH = 13

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16
Q

Write the equation of MgO with water (with state symbols) and state its pH.

A

MgO (s) + H2O (l) ⇌ Mg(OH)2 (aq)
pH = 9

17
Q

Write the equation of Al2O3 with water (with state symbols) and state its pH.

A

Insoluble.

pH = 7

18
Q

Write the equation of SiO2 with water (with state symbols) and state its pH.

A

Insoluble.

pH = 7

19
Q

Write the equation of P4O10 with water (with state symbols) and state its pH.

A

P4O10 (s) + 6 H2O (l) → 4H3PO4 (aq)
pH = 2

20
Q

Write the equation of SO3 with water (with state symbols) and state its pH.

A

SO3 (g) + H2O (l) → H2SO4 (aq)
pH = 2

21
Q

Write the equation of Na2O with acid (if any with state symbols).

A

Na2O (s) + 2HCl (aq) → 2NaCl (aq) + H2O (l)

22
Q

Write the equation of MgO with acid (if any with state symbols).

A

MgO (s) + 2HCl (aq) → MgCl2 (aq) + H2O (l)

23
Q

Write the equation of Al2O3 with acid (if any with state symbols).

A

Al2O3 (s) + 6HCl (aq) → 2AlCl3 (aq) + 3H2O (l)

24
Q

Write the equation of SiO2 with acid (if any with state symbols).

A

No reaction

25
Q

Write the equation of P4O10 with acid (if any with state symbols).

A

No reaction

26
Q

Write the equation of SO3 with acid (if any with state symbols).

A

No reaction

27
Q

Write the equation of Na2O with base (if any with state symbols).

A

No reaction

28
Q

Write the equation of MgO with base (if any with state symbols).

A

No reaction

29
Q

Write the equation of Al2O3 with base (if any with state symbols).

A

Al2O3 (s) + 2NaOH (aq) + 3H2O (l) → 2NaAl(OH)4 (aq)

30
Q

Write the equation of SiO2 with base (if any with state symbols).

A
31
Q

Write the equation of P4O10 with base (if any with state symbols).

A
32
Q

Write the equation of SO3 with base (if any with state symbols).

A
33
Q

What is the structure and bonding of the chloride of Na?

A

Structure: Giant ionic structure
Bonding: Ionic

34
Q

What is the structure and bonding of the chloride of Mg?

A
35
Q

What is the strcuture and bonding of the chloride of Al?

A
36
Q

What is the structure and bonding of the chloride of Si?

A

Structure: Simple Molecular Structure
Bonding: Covalent

37
Q

What is the structure and bonding of the chloride of P?

A

Structure: Simple molecular structure
Bonding: Covalent

38
Q

Write the equation of NaCl with water (with state symbols) and state its pH.

A

NaCl (s) → Na+ (aq) + Cl- (aq)
pH = 7

39
Q

Write the equation of

A

Chemistry (10 decks)

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