Podcast
Questions and Answers
Which property of elements is periodic according to the basic law of the modern periodic table?
Which property of elements is periodic according to the basic law of the modern periodic table?
- Atomic radius
- Atomic weight
- Atomic number (correct)
- Atomic mass
What is the main factor responsible for the periodicity of elements?
What is the main factor responsible for the periodicity of elements?
- Atomic mass
- Number of neutrons
- Number of protons
- Number of valence electrons (correct)
How does the number of valence electrons change as we move across a period from left to right?
How does the number of valence electrons change as we move across a period from left to right?
- Increases (correct)
- Becomes zero
- Decreases
- Remains the same