Home › CBSE Class 12 (Science) › Physics › Atoms › In which year did J.J. Thomson put forward the f…
In which year did J.J. Thomson put forward the first model of the atom?
A1913
B1911
C1905
D1898
Answer & Solution
Correct answer: D. 1898
Thomson proposed his uniform positive sphere model in 1898, a year after his electron discharge experiments.
Related questions
Which hydrogen series, ending at n = 6, was discovered in 1953?Which hydrogen series ends on the n = 4 level?The hydrogen series ending at n = 1 is named after which physicist?Which spectral region contains the Paschen series of hydrogen?Balmer series lines arise when the electron falls to which level?In which region of the spectrum does the Lyman series of hydrogen lie?A hydrogen electron falls from n = 3 to n = 2. What photon energy is emitted?The n = 3 orbit of hydrogen has what radius compared with the n = 1 orbit?