Q. In the modern periodic table, the number of period of the element is the same as
A. principal quantum number
B. atomic number
C. azimuthal quantum number
D. atomic mass
Answer: principal quantum number
Take Mock Tests
| Government Schemes Mock Test | Start Test! |
| Political Science Mock Test – 42 | Start Test |
| History Test – 190 | Start Test |
| Quantitative Aptitude Test | Start Test! | Data Interpretation - Mock Test | Start Test! |
| General Awareness - Mock Test | Start Test! |
| Reasoning Ability - Mock Test | Start Test! |
We will be happy to hear your thoughts