Consider the following information about element P and Q :
Period number Group number
P 2 15
Q 3 2
Then formula of the compound formed by P and Q element is :
(1) PQ
(2)
(3)
(4)
The radius of which ion is closest to that of ion ?
1.
2.
3.
4.
The correct order of is:
(1) Ne>F>O>N
(2) O>F>Ne>N
(3) Ne>O>F>N
(4) O>Ne>F>N
Which of the following transformation least energy is required?
(1)
(2)
(3)
(4)
Which of the following represents correct order of electron affinity?
(1) Cl>F>S>O
(2) F>O>S>Cl
(3) F>Cl>S>O
(4) Cl>S>O>F
Correct expression of "Allred and Rochow's" scale is:
(a) Electronegativity =
(b) Electronegativity =
(c) Electronegativity =
(d) Electronegativity =
The process that requires absorption of energy is:
1.
2.
3.
4.
If P and T are second period p-block elements then which of the following graph show correct relation between valence electrons in to (corresponding molecules) and their bond order is :
(a)
(b)
(c)
(d)