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

A

Osmium

Q

Inert metal

A

PT and Au

Q

Best conductor

A

Silver

Q

Poorest conductor

A

Lead

Q

Best semiconductor

A

Silicon

Q

Radioactive liquid

A

Francium

Q

Most radioactive

A

Radium

Q

Max lusture

A

Rhodium

Q

Hardest metal

A

Titanium

Q

Densest liquid

A

Mercury

Q

Maximum difference in boiling and melting point

A

Gallium

Q

Max. Tensile strength

A

Boron

Q

Most poisonous

A

Pollunium

Q

Most electronegative

A

Fluorine

Q

Liquid non metal

A

Bromine

Q

Maximum ionisation energy

A

Helium

Q

Pseudo metals

A

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

Q

Smallest radius

A

Fluorine

Q

Smallest cation

A

H+

Q

Smallest anion

A

F-