Among the following elements, identify the one that is not an actinoid :
1. Curium (Z = 96)
2. Californium (Z = 98)
3. Uranium (Z = 92)
4. Terbium (Z = 65)
Subtopic:  Modern Periodic Table & Periodicity |
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The period number in the long form of the periodic table is equal to : 

1. Magnetic quantum number of any element of the period.
2. Atomic number of any element of the period.
3. Maximum principal quantum number of any element of the period.
4. Maximum azimuthal quantum number of any element of the period.

Subtopic:  Modern Periodic Table & Periodicity |
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The elements in which electrons are progressively filled in 4f-orbitals are called:

1. Actinoids 2. Transition elements
3. Lanthanoids 4. Halogens
Subtopic:  Modern Periodic Table & Periodicity |
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The outermost electronic configuration of the last element of the p-block in the 6th period is represented by:

1. 7s27p6

2. 5f146d107s27p0

3. 4f145d106s26p6

4. 4f145d106s26p4

Subtopic:  Modern Periodic Table & Periodicity |
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Among the following elements whose atomic numbers are given below, which cannot be accommodated in the present set up of the long periodic table?
1. 107
2. 118
3. 126
4. 102

Subtopic:  Modern Periodic Table & Periodicity |
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The elements with atomic numbers 35, 53, and 85 are:

1. Noble gases 2. Halogens
3. Heavy metals 4. Light metals
Subtopic:  Modern Periodic Table & Periodicity |
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Among the following, the elements that can show covalency greater than 4 is/are:

(a) Be

(b)

(c) S

(d) B

Choose the correct option

1. (a), (d)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Subtopic:  Modern Periodic Table & Periodicity |
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Among the following sequences, the sequence contains atomic numbers of only representative elements is/are:

(a) 3, 33, 53, 87 (b) 2, 10, 22, 36
(c) 7, 17, 25, 37, 48 (d) 9, 35, 51, 88

Choose the correct option:
1. (a), (d)
2. (b), (c)
3. (c), (d)
4. (b), (d)

Subtopic:  Modern Periodic Table & Periodicity |
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The properties among the following can be shown by the element belonging
to the 3rd period and group 13 of the periodic table:

(a) Good conductor of electricity

(b) Liquid, metallic

(c) Solid, metallic

(d) Solid, non-metallic

Choose the correct option :

1. (a), (c)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Subtopic:  Modern Periodic Table & Periodicity |
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