Chemistry Test ...

Elements which occupied position in the Lothar Meyer curve, on the peaks, were -

In the general electronic configuration -

(n - 2)f^1-14 (n - 1)d^0-1 ns², if value of n = 7 the configuration will be -

In which group of the modern periodic table are halogens placed?

The symbol for element with atomic number 111 and name Unununium  is

Azide ion [N₃^-] exhibits an (N−N) bond order of 2 and may be represented by the resonance structures I,II and III given below:

The most stable resonance structure is

C—Cl bond in  (vinyl chloride) is stabilised in the same way as in 

Hydrogen bonds are formed in many compounds e.g., H₂O, HF, NH₃. The boiling point of such compounds depends to a large extent on the strength of hydrogen bond and the number of hydrogen bonds. The correct decreasing order of the boiling points of above compounds is :

Which of the following angle corresponds to sp² hybridisation?

 bond in between (C₂— C₃) vinyl acetylene is formed by ...... overlapping

Assuming that Hund's rule is violated, the bond order and magnetic nature of the diatomic molecule B₂ is