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The boiling point of group 15 follows the order.

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Important Questions on The p-Block Elements

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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.
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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?
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
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
The element that does NOT exhibits allotropy is-
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
The correct option from below is
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Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
White phosphorous P4 has the following characteristics
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
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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
Choose incorrect statement for nitrogen.
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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?
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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:
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?
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Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Which of the following pair of elements has a maximum difference of radii?
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Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
single N-N bond is weaker than the single P-P bond. This is because of:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
What is the electronic configuration of P in H3PO4?
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Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
A: P can form PF5, but N cannot form NF5 .

R: N is more electronegative than that of fluorine.
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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-
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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-
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Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements
Bond angle in white phosphorus is