The increasing order of reactivity among group 1 elements is Li < Na < K < Rb
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If S and T are two sets such that S has 21 elements, T has 32 elements, and S ∩ T has 11 elements, how many elements does S ∪ T have?
It is given that: n(S) = 21, n(T) = 32, n(S ∩ T) = 11 We know that: n (S ∪ T) = n (S) + n (T) – n (S...
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If X and Y are two sets such that X has 40 elements, X ∪Y has 60 elements and X ∩Y has 10 elements, how many elements does Y have?
It is given that: n(X) = 40, n(X ∪ Y) = 60, n(X ∩ Y) = 10 We know that: n(X ∪ Y) = n(X) + n(Y) – n(X ∩ Y) ∴ 60 = 40...
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The increasing order of reactivity among group 1 elements is Li < Na < K < Rb <Cs whereas that among group 17 elements is F > CI > Br > I. Explain.
The elements present in group 1 have only 1 valence electron, which they tend to lose. Group 17 elements, on the other hand, need only one electron to attain the...
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Considering the elements F, Cl, O and N, the correct order of their chemical reactivity in terms of oxidizing property is:
The oxidizing character of elements increases from left to right across a period. Thus, we get the decreasing order of oxidizing property as F > O > N. Again, the...
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Nitrogen exists as a diatomic molecule with a triple bond between the two atoms, whereas the heavier elements of the group do not
[Hint : p-p multiple bonds are formed by N due to its small size.]
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Arrange the following in order of their increasing reactivity in nucleophilic substitution reactions :
[Hint : CH3F < CH3Cl < CH3Br < CH3I]
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Arrange the following in order of their increasing reactivity towards
C2H5COCH3 < CH3COCH3 < CH3CHO < HCHO
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Identify the elements with the following property and arrange them in increasing order of their reactivity.
(a) Na or K (b) Ca (c) Hg Reactivity order: Hg < Ca < Na < K
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What is reactivity series? How does the reactivity series of metals help in predicting the relative activities of various metals?
(i) The arrangement of metals in the vertical column in the order of decreasing reactivity is called reactivity series or activity series. A metal placed above hydrogen in the activity...
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Read the following statements regarding chemical reactivity of group 15 elements. (i) Only compound of Bi with +5 oxidation state is BiF5.
(c) For nitrogen oxidation states from +1 to +4 disproportionate in acidic solution only. Oxidation state of phosphorous in P2O5 is + 5 whereas in P2O5 is +3 thus P2O5...
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