Sir explain the following urgently: 21. Nitrogen a omic number 7) and phosphorus (atomic
number 15) belong to group 15 of the periodic table.
Write the electronic configuration of these two
elements. Predict whether they are metals or non-
metals.
22. An atom has the electronic configuration of 2, 8, 7.
(a) What is the atomic number of this element?
(b) To which of the following elements would it be
chemically similar?
N(7), F(9), P(15), Ar(18)
Atomic number =17 The element is similar to halogens in 17th group.
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Mehakpreet Singh answered this
First of all I am a student So your answer Nitrogen atomic no is 7 so election configaration is 2,5 so it is non metal Then phosphorus atomic number is 15 so 2,8,5 so it is also non metal