Q261
Open questionThe elements of an F-block are called:
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Chemistry GK · all questionsPeriodic Classification of elements
Periodic Classification of elements
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Q262
Open questionElements like Li, Na and K . . . . . . . . are related to
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Q263
Open questionLanthanides and Actinides?
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Q264
Open questionIn the modern periodic table, elements of the same group have the same number.
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Q265
Open questionIn the modern periodic table, . . . . . . . . period does not include metals-
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Q266
Open questionThe electronic configuration of an element is 2, 8, 2. It is in the . . . . . . . . group in the modern periodic table.
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Q267
Open questionAluminium was named as . . . . . . . . metal in the modern periodic table.
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Q268
Open questionWhich of the following statements regarding the modern periodic table is correct?
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Q269
Open questionWhich of the following is the largest size atom?
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Q270
Open question. . . . . . . . is the most electrically negative element of the table.
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Q271
Open questionWhich of the following states that "the properties of elements are the periodic function of their atomic numbers".
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Q272
Open questionIn the modern periodic table, in which period elements with atomic numbers 19 to 36 are placed?
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Q273
Open questionThe atomic number of actinium is-
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Q274
Open questionWhich of the following statements are correct?
1. There are 18 elements in the fourth and fifth period.
2. The seventh period is incomplete with 33 elements.
3. The sixth period has 32 elements.
1. There are 18 elements in the fourth and fifth period.
2. The seventh period is incomplete with 33 elements.
3. The sixth period has 32 elements.
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Q275
Open questionWho was the first scientist to make periodic table of elements?
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Q276
Open questionElements in any common group are similar.
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Q277
Open questionMatch List I with List II
| List-I | List-II |
| a. Element with smallest atomic radius | 1. Cs |
| b. Element with largest atomic radius | 2. F |
| c. Element with highest electron affinity | 3. Br |
| d. Element with negative electron affinity | 4. Cl |
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Q278
Open questionWhich of the following statements is/are false regarding modern periodic table?
1. Elements in the modern periodic table are arranged in decreasing order of their atomic numbers.
2. Elements in the modern periodic table are arranged in increasing order of their atomic masses.
3. In the modern periodic table, isotopes are placed in adjacent groups.
4. Elements in modern periodic table are arranged in increasing order of their atomic numbers.
1. Elements in the modern periodic table are arranged in decreasing order of their atomic numbers.
2. Elements in the modern periodic table are arranged in increasing order of their atomic masses.
3. In the modern periodic table, isotopes are placed in adjacent groups.
4. Elements in modern periodic table are arranged in increasing order of their atomic numbers.
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Q279
Open questionThe correct increasing order of acidity of the oxide of Mn is -
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Q280
Open questionWhich element has atomic number 3?
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