3 years ago

Which activity is the best demonstration of J. J. Thomson’s use of creativity in his work?

1 answer:

7 0

The plum pudding model of the atom by the scientist Sir Joseph John Thompson or J.J. Thompson. It was theorized after the discovery that electrons are present in the atom. In this model, the atom is composed mainly of electrons. It was describe as plum pudding because the electrons are dispersed within the atom. John Dalton discovered the atom. Ernest Rutherford discovered the half – life of an atom and Neils Bohr explain the quantum mechanics. So the answer is J.J. Thompson.

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A chemist has synthesized two new dyes based on the molecular structure of plant-based dyes. The lowest energy absorption line f

Nimfa-mama [501]

Answer:

1. The dye that absorbs at 530 nm.

Explanation:

The dye will absorb light to promote the transition of an electron from the HOMO to the LUMO orbital.

The higher the gap, the higher the energy of transition. The energy can be calculated by E = hc/λ, in which h and c are constants and λ is the wavelength.

The equation shows that the higher the energy, the higher the gap and the lower the wavelength.

Therefore, the dye with absorption at 530 nm has the higher HOMO-LUMO gap.

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4 years ago

Which of these is a monatomic element?<br> a. F<br> b. Kr<br> c. Ne<br> d. Rn

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C. Ne

down here is the list of monoatomic elements, just for you :)