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Chemistry > Ch.6 The periodic table > Flashcards

Ch.6 The periodic table Flashcards

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1
Q

What are the reasons for the classification of elements?

A

Pg 114

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2
Q

What is Dobereiner’s Law of Triads?

A

Pg 114

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3
Q

What are some examples of traids?

A
  1. Li, Na, K
  2. Cl, Br, I
  3. Ca, Sr, Ba
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4
Q

What was the achievement of traids classification?

A

Pg 115

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5
Q

What are the reasons for rejecting the triads classification?

A

Pg 115

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6
Q

What is the Newland’s Law of Octaves?

A

Pg 115

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7
Q

What were the achievements of Newland’s classification of octaves?

A

Pg 115

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8
Q

What are the reasons for rejecting the Newland’s classification of Octaves?

A

Pg 115

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9
Q

What is a periodic table and who arranged the elements in that form?

A

Pg 116

Dmitiri Invanovich Mendeleev

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10
Q

What are the basis of Mendeleev’s periodic classification?

A

Pg 116

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11
Q

What are the achivements of Mendeleev’s periodic table?

A

Pg 116

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12
Q

What are the defects of Mendeleev’s periodic table?

A

Pg 117

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13
Q

What is Mendeleev’s Periodic Law and Mendeleev’s Periodic Table?

A

Pg 116

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14
Q

Why the word ‘periodic’ is used as the name of such a table?

A

Pg 116

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15
Q

What is the difference between Mendeleev’s periodic table and the Modern Periodic table?

A

The atomic weight in Mendeleev’s periodic table is replaced by atomic number in Modern periodic table.

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16
Q

What is a quantam number?

A

The number of outermost shell as counted from nucleus.

17
Q

What are the merits of modern periodic table?

A

Pg 120

18
Q

What are the defects of modern periodic table/

A

Pg 120

19
Q

The elements in group 17 or VII A are called_____. They are__________.

A

Halogens

F, Cl, Br, I

20
Q

The elements in group 1 or I A are called_____. They are__________.

A

Alkali metals

21
Q

The elements in group 2 or II A are called_____. They are__________.

A

Alkalines earth metals.

22
Q

The elements in group 18 or zero are called_____. They are__________.

A

Inert of rare gases

Chemistry (3 decks)

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