Question

136. Electron affinity depends on
1) Atomic size 2) Nuclear charge 3) Atomic number 4) Atomic size and nuclear charge both
137. Increasing order of electron affinity is
1) N < O < Cl < Al 2) O < N < Al < Cl 3) N < Al < O < Cl 4) Cl < N < O < Al
138. The correct order of electron affinity of B, C, N, O is
1) O > C > N > B 2) B > N > C > O 3) O > C > B > N 4) O > B > C > N
139. The electronic configuration of the element with maximum electron affinity is
1) 1s2
, 2s2
, 2p3 2) 1s2
, 2s2
, 2p5 3) 1s2
, 2s2
, 2p6
, 3s2
, 3p5 4) 1s2
, 2s2
, 2p6
, 3s2
, 3p3
140. Which of the following species has the highest electron affinity
1) F- 2) O 3) O- 4) Na+
141. The electron affinity values (in kJ mol-1) of three halogens X, Y and Z are respectively - 349, -333 and - 325.
Then X, Y and Z are respectively
1) F2
, Cl2
and Br2
2) Cl2
, F2
and Br2
3) Cl2
, Br2
and F2
4) Br2
, Cl2
and F2
142. Which among the following factors is the most important in making fluorine the strongest oxidizing halogen
1) Hydration enthalpy 2) Ionisation enthalpy 3) Electron affinity 4) Bond dissociation energy
143. Which of the following pairs show reverse properties on moving along a period from left to right and from top
to down in a group
1) Nuclear charge and electron affinity 2) Ionisation energy and electron affinity
3) Atomic radius and electron affinity 4) None of these
144. Order of electron affinity of F, Cl, Br and I is....
1) F < Cl > Br > I 2) F > Cl > Br > I 3) F < Cl < Br < I 4) F > Cl < Br > I
145. Which one of the following arrangements represents the correct order of least negative to most negative
electron gain enthalpy for C, Ca, Al, F and O
1) Al < Ca < O < C < F 2) Al < O < C < Ca < F 3) C < F < O < Al < Ca 4) Ca < Al < C < O < F
146. Which one of the following is an incrorrect statement
1) The ionisation potential of nitrogen is greater than that of oxygen
2) The electron affinity of fluorine is greater than that of chlorine
3) The ionisation potential of beryllium is greater than that of boron
4) The electronegativity of fluorine is greater than that of chlorine

Answer 1

Hello Mate

136)4

137)3

138)3

139)3 (chlorine)

140)2 (oxygen)

141)2 (X-Cl;Y-F;Z-Br)

142)1

143)3

144)1

145)4

146)2

All are Correct Answers

Hope it's helpful to you

Answer 2

Answer:

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