AIEEE Exam

Which of the following molecules does not
exist?
(A) NF3 (B) NF5
(C) PF5 (D) N2H4

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AIEEE Other Question

What is the hybrid state of nitrogen in N2
molecule?
(A) sp3 (B) sp
(C) sp2 (D) No specific state.
On the portion of the straight line x + y = 3 which
is intercepted between the axes, a square is
constructed, away from the origin, with this
portion as one of its side. If p denotes the
perpendicular distance of a side of this square
from the origin, then the maximum value of p
is