11. | Two atoms are called isotopes if |
A. they have the same neutron number but different masses | |
B. They have the same atomic number but different atomic number | |
C. The product of the number of protons and neutrons in them is the same, but the number of protons is different | |
D. They have the same number of neutrons, but different modes of radioactive moment |
12. | The difference between isotopes of an element is due to the presence of different numbers of |
A. Proton | |
B. neutrons | |
C. electron | |
D. photon |
13. | An isotope of a nucleus of an atom is a nucleus in which |
A. Same number of neutrons, but different number of protons | |
B. The number of protons is the same but the number of neutrons is different | |
C. the number of protons and neutrons is the same | |
D. The number of protons and neutrons is different |
14. | Due to which properties the isotopes of an element differ |
A. neutron and proton numbers | |
B. neutron atomic number | |
C. Proton and Electron Number | |
D. atomic mass and atomic number |
15. | The number of isotopes of hydrogen is |
A. 2 | |
B. 3 | |
C. 4 | |
D. 5 |
16. | Which of the following is not an isotope of hydrogen |
A. protium | |
B. deuterium | |
C. tritium | |
D. transium |
17. | The radioactive isotope of hydrogen is called |
A. deuterium | |
B. protium | |
C. radium | |
D. tritium |
18. | What are ₈O¹⁶, ₈O¹⁷ and O¹⁸ called? |
A. isotopes | |
B. constituents | |
C. equal pressure | |
D. sumneutronic |
19. | What is ₁₇CI³⁵ and ₁₇CI³⁷? |
A. isomer | |
B. isotopes | |
C. commemorative | |
D. burdensome |
20. | The largest number of isotopes are found in |
A. uranium | |
B. hydrogen | |
C. polonium | |
D. lead |