EASY
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Is bismuth a metalloid?

Important Questions on The p-Block Elements

EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

With respect to group 15 elements, answer the following :

Comment on the trend in ionisation enthalpy giving reason.

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Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Of the following compounds, the most acidic is:
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Which among the group -15 elements does NOT exist as tetra atomic molecule?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
(a) N2 is known whereas P2 is not known. Why?
(b) Bleaching of flowers by chlorine is permanent while that by sulphur dioxide is temporary. Explain.
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
The first ionisation energies (in kJmol-1) of four consecutive elements of the second period are given in the options. The first ionisation energy of nitrogen is
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Due to pπ-pπ bonding interactions, nitrogen for N2 but phosphorus forms and does not form a diatomic molecule.
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
An element X belongs to 4th  period  and 15th  group of the periodic table. Which one of the following is true regarding order electronic configuration of X. It has
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
The correct option from below is
HARD
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Which of the following statements is incorrect for the group 15th elements?
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
The boiling point of group 15 follows the order:- 
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Which of the following is the increasing order of enthalpy of vaporisation?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
In group 15, the melting points of the elements:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Name the elements of group 15. What is their valence shell electronic configuration?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Among the members of the group 15 (N, P, As, Sb and Bi), which of the following properties show an increase as we go down from nitrogen to bismuth:
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
What is the electronic configuration of P in H3PO4?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
There is considerable increase in covalent radius from N to P. However, from Sb to Bi only small increase (of 7 pm) in covalent radius is observed. This is due to:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Discuss the general characteristics of Group 15 elements with reference to their electronic configuration, oxidation state, atomic size, ionisation enthalpy and electronegativity.
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Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
NH3  has higher boiling point than PH3, because:
HARD
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
The percentage of π‐character in the orbitals forming P-P bonds in P4 is-
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Maximum number of covalent bonds formed by N and P are-