Home
Class 9
CHEMISTRY
Two elements X and Y have the same atomi...

Two elements X and Y have the same atomic mass but this atomic number are 20 and 21 respectively X and Y are

A

Isobar

B

Isotopes

C

Isomere

D

Isotones

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF THE ATOM

    CPC CAMBRIDGE PUBLICATION|Exercise ADDITIONAL QUESTIONS (II. Fill in the blanks)|5 Videos

  • STRUCTURE OF THE ATOM

    CPC CAMBRIDGE PUBLICATION|Exercise ADDITIONAL QUESTIONS (III. Match the following)|1 Videos

  • STRUCTURE OF THE ATOM

    CPC CAMBRIDGE PUBLICATION|Exercise EXERCISE|19 Videos

  • MATTER IN OUR SURROUNDINGS

    CPC CAMBRIDGE PUBLICATION|Exercise UNIT TEST (Answer the following)|4 Videos

Similar Questions

Explore conceptually related problems

In a triad of three elements A, B, and C, the atomic mass of A and B are 80 and 120 respectively. Find the atomic mass of element C.

Out of the two elements X and Y which has a bigger atomic radius? (i) X has atomic number = 18 and atomic mass = 40. (ii) Y has atomic number = 20 and atomic mass = 40.

Two elements X and Y have atomic numbers 12 and 16 respectively. To which period of the modern periodic table do these two elements belong ? What type of bond will be formed between them and why?

An element with atomic number 21 is a

Two elements X and Y have atomic masses 14 and 16 respectively. They can form a series of five compounds A, B, C, D and E in which for the same amount of X, Y is present in the ratio of 1:2:3:4:5. If the compound A has 28 parts by weight of X and 16 parts by weight of Y, then compound C will have 24 parts by weight of Y combined with

Three elements X, Y and Z have atomic numbers 7, 10 and 14 respectively. (i) Identify the group number of these elements in the periodic table. (ii) Mention one unique feature each of elements Y and Z. (iii) Which of the above two elements belong to the same period ?

Two elements X and Y have atomic number 3 and 5 respectively, give the formula of their chlorides.

The nucleides X and Y are isotonic to each other with mass numbers 70 and 72 respectively. If the atomic number of X is 34, then that of Y would be

Three elements A, B and C with similar properties have atomic masses X,Y and Z respectively. The mass of Y is approximately equal to the average mass of X and Z. What is such an arrangement of elements called? Give one example of such a set of elements.