Podcast
Questions and Answers
Which criterion is used to classify elements into s, p, d, f blocks?
Which criterion is used to classify elements into s, p, d, f blocks?
- Number of neutrons
- Atomic mass
- Energy sublevels in which the valence electrons are found (correct)
- Number of protons
What does the Periodic Law state?
What does the Periodic Law state?
- Elements with lower atomic numbers have higher electronegativity
- Elements with similar properties have consecutive atomic numbers
- Elements with higher atomic numbers have lower reactivity
- Elements with consecutive atomic numbers have similar properties (correct)
How does ionization enthalpy relate to metallic character?
How does ionization enthalpy relate to metallic character?
- Ionization enthalpy has no relation to metallic character
- Higher ionization enthalpy corresponds to greater metallic character
- Metallic character decreases with decreasing ionization enthalpy
- Lower ionization enthalpy corresponds to greater metallic character (correct)
What is the most important concept in chemistry, according to the text?
What is the most important concept in chemistry, according to the text?
Who profounded the Law of Octaves in 1865?
Who profounded the Law of Octaves in 1865?
Why is awareness of the Periodic Table essential?
Why is awareness of the Periodic Table essential?
What did Johann Dobereiner consider in the early 1800s?
What did Johann Dobereiner consider in the early 1800s?
How many elements were known in 1800?
How many elements were known in 1800?
What was the main contribution of Glenn T. Seaborg?
What was the main contribution of Glenn T. Seaborg?
What did John Alexander Newlands arrange in his Law of Octaves?
What did John Alexander Newlands arrange in his Law of Octaves?
Why did scientists search for a systematic way to organize their knowledge by classifying the elements?
Why did scientists search for a systematic way to organize their knowledge by classifying the elements?
What was the relationship noted by John Alexander Newlands in his Law of Octaves?
What was the relationship noted by John Alexander Newlands in his Law of Octaves?
What was the main idea behind Johann Dobereiner's work?
What was the main idea behind Johann Dobereiner's work?
What was the consequence of systematizing the knowledge gained by a number of scientists through their observations and experiments?
What was the consequence of systematizing the knowledge gained by a number of scientists through their observations and experiments?
