Which pair of atomic numbers represents ...

Which pair of atomic numbers represents s-block elements?

A

7,15

B

6, 12

C

9,17

D

3, 12

Text Solution

Verified by Experts

The correct Answer is:

D

The elements with atomic number 3 and 12 belongs to s-block..
`Z=3: 1s^2 2s^1`
`Z = 12 : 1s^2 2s^2 2p^6 3s^2`

Doubtnut Promotions Banner Desktop Dark

Doubtnut Promotions Banner Mobile Dark

|

Topper's Solved these Questions

CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
BRILLIANT PUBLICATION|Exercise QUESTIONS (LEVEL-II)|51 Videos
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
BRILLIANT PUBLICATION|Exercise QUESTIONS (LEVEL-III (Single Correct Answer Type ))|8 Videos
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
BRILLIANT PUBLICATION|Exercise QUESTIONS|11 Videos
CHEMICAL THERMODYNAMICS
BRILLIANT PUBLICATION|Exercise LEVEL-III|52 Videos
ENVIRONMENTAL CHEMISTRY
BRILLIANT PUBLICATION|Exercise QUESTIONS LEVEL-II (ASSERTION-REASON TYPE)|10 Videos

Similar Questions

Explore conceptually related problems

Which of the following pairs of atomic numbers represent elements of the same group?

Which of the following pairs of structures represent tautomers?

Knowledge Check

Among the elements with the following atomic numbers, which are d-block elements? I) 29 II) 81 III) 46 IV) 58

A

I, IV

B

IV, II

C

I, III

D

II, III

Among the elements with the following atomic numbers, which are d-block elements? I) 29 II) 81 III) 46 IV) 58

A

I,IV

B

IV, II

C

I, III

D

II, III

Ionization energies of five elements, are given below: Which of the following pair represents elements of same group?

A

B,C

B

A,B

C

A,D

D

B,D

Similar Questions

Explore conceptually related problems

Why is potassium considered as an s-block element?

What are inner transition elements? Decide which of the following atomic numbers are the atomic numbers of the inner transition elements :29,59 74,95,102,104

Define atomic number of an element?

What are the atomic numbers of elements whose outemost electronic configurations are given by 3s^(1)

Which of the following pairs represents linkage isomers?

BRILLIANT PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTIONS (LEVEL-I)

Which pair of atomic numbers represents s-block elements?
02:49
|
The atomic radius increases as we move down a group because
02:22
|
Which one of the following ions has the smallest radius?
02:36
|
Consider the ions: 'K^+, S^(2-), Cl^-' and 'Ca^(2+) .' The radii of th...
02:32
|
The radius of Cr is minimum in which of the following compounds?
01:49
|
The set representing the correct order of first ionization potential i...
02:43
|
Which of the following has least electron affinity?
02:32
|
Which of the following statements is correct with respect to the prope...
02:44
|
The element with the electronic configurations as (Ar) 3d^(10)4s^(2)4p...
01:55
|
The law of triads is not applicable with
02:27
|
If Aufbau rule is not followed, K-19 will be placed in........... bloc...
02:44
|
Following triads have approximately equal size
02:46
|
Which pair is different from the others?
02:13
|
Which is/are amphoteric oxides?
02:13
|
Second electron affinity of an element
02:45
|
Ionisation energy of F^Ɵ is 320 kJ mol^(-1) . The electron gain enthal...
03:04
|
Which of the following element has the highest EN?
02:47
|
Which of the following oxides is most basic?
02:12
|
The IUPAC name for the element with atomic number, Z=119 is.
02:05
|
An element which lies in the same group of the periodic table as mercu...
02:23
|