Periodic classification of elements (Prof. Arun)

Find the odd one

Across a period......... Electron increases by............... , while down the group remain...............

Electronic configuration of Calcium

The third period contains only 8 elements due to...........................

Newland arranged the elements starting from................... And ending with......................

Identify missing element in Triad S(32.1) + Se (............)+ Te (127.6)

These elements were placed in the same box in Newlands octave

Law of octave rule was found to be applicable upto Copper

Table had vacant space for undiscovered elements was a merit of whose periodic table

Atomic radius goes on................. while going from left to right within a period

Valency is determined by

................ is a metalloid

Which statement is true for lithium and sodium?

Atomic Number 9... State the element

In newlands theory elements are arranged in increasing order of atomic number

Isoptopes have same.....................

If Neon : Inert gas then Bromine : ?

State group number and period of magnesium

Atomic size goes on.............. while going down a group

An element has only................ types of atoms

Given K = 2,8,8,1 which group the element belong to?