John Alexander Newlands proposed the 'Law of Octaves' in 1865. He observed that when elements were arranged in order of increasing atomic weight, the properties of every eighth element showed similarities to the first, like the eighth note in an octave of music.
English
80 Questions
160 Marks
60 Mins English English80 Questions160 Marks60 Mins English English20 Questions40 Marks25 Mins EnglishH₂O + C → H₂ + CO
The above reaction is an example of
When an iron nail is placed in copper sulphate solution, what is observed?
Which of the following is NOT a Döbereiner’s triad?
In which of two groups of elements have highly negative electron gain enthalpies and readily add one or two electrons respectively to attain the stable noble gas configuration?
Which of the following elements is classified as a lanthanoid group element?
Suggested Test Series
Suggested Test Series
H₂O + C → H₂ + CO
The above reaction is an example of
When an iron nail is placed in copper sulphate solution, what is observed?
Which of the following is NOT a Döbereiner’s triad?
In which of two groups of elements have highly negative electron gain enthalpies and readily add one or two electrons respectively to attain the stable noble gas configuration?
Which of the following elements is classified as a lanthanoid group element?
