Period Table Flashcards by Ansh Aryan

Q

No. Of periods

A

7

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Q

No. Of groups

A

18

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Q

What is principal quantum no. ?

A

No. Of orbits

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Q

No. Of Elements in 1st period

A

2

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Q

Position of lanthanoids

A

58-71

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Q

Position of actinoids

A

91-103

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Q

Peaks occupied in lother meyer curves

A

Alkali metals

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Q

Ascending mid points in lm curve

A

Halogens

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Q

Descending mid points in lm curves

A

Alkaline metals

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Q

De chan courtis arranged elements in

A

Atomic weights

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Q

Metal with maximum electron affinity

A

Gold

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Q

Mendeleev arrange elements in order with

A

Atomic mass

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Q

Moseleys law

A

Root frequency is directly proportional to atomic no.

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Q

Moseleys equations

A

Root frequency is equal to az-ab

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Q

Max melting point

A

Tungsten

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Q

Max oxidation state

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A

Osmium

Q

Inert metal

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A

PT and Au

Q

Best conductor

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A

Silver

Q

Poorest conductor

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A

Lead

Q

Best semiconductor

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A

Silicon

Q

Radioactive liquid

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A

Francium

Q

Most radioactive

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A

Radium

Q

Max lusture

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A

Rhodium

Q

Hardest metal

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A

Titanium

Densest liquid

Mercury

Maximum difference in boiling and melting point

Gallium

Max. Tensile strength

Boron

Most poisonous

Pollunium

Most electronegative

Fluorine

Liquid non metal

Bromine

Maximum ionisation energy

Helium

Pseudo metals

Be,zn,al,gal,tin, germanium, bismuth,lead

Smallest radius

Fluorine

Smallest cation

H+

Smallest anion

F-