Which of the following arrangement shows the correct order of increasing stability
(a) N2+ < As2+ < Sb2+ <B;2+
(b) Zn2+ < Cu2+ <As2+ < Bi2+
(c) Cu2+ < Co2+ <p2+ < N2+
(d) C2+ < Ge2+ < Sn2+ < Pb2+
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Read the passages given below and answer the questions that follow:
I used to watch villagers from my room, going up the hill and suddenly vanishing after a while. One day I decided to check it out myself. I found nobody except a few mountaineers. I asked if I could join them. To my pleasant surprise, they answered in the affirmative and motivated me to take to climbing.”
(i) Who is T here? Where was she?
(ii) What did she see from her room?
(iii) Find words from the passage which mean opposite to the given words:
(a) appearing, (b) negative.
Answer
(i) T is the two times Mt. Everest conqueror, Santosh Yadav. She was at the Kasturba hostel of Maharani College, Jaipur.
(ii) She used to watch villagers going up the Aravali hills and suddenly vanishing after some time from her room.
(iii) (a) appearing — vanishing
(b) negative — affirmative
Answer:
c)Cu2+<Ge2+<Sn2+<pb2+. I think it is helpful for you