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ira [324]
3 years ago
9

Explain how the understanding of atomic emission spectrum led to development of the atomic theory? ( 4 points)

Chemistry
2 answers:
dangina [55]3 years ago
6 0
The atomic emission spectrum (Bhor analyzed) of hydogren and showed mathematically that the result of movement making a transition from a high energy state to a lower energy.

Hope this help
-Dominant- [34]3 years ago
5 0
Well, all of this we owe it to Bohr who analyzed the atomic emission spectrum of hydrogen and he could probe matematically that it was a result of movement of e- from an especific energy level to a lower one. The understanding of levels of energy took to the development of the atomic theory
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A single atom of an element has 21 neutrons, 20 electrons, and 20 protons. Which element is it?
jeyben [28]

Answer:

Calcium

Explanation:

Clacium has atomic number 20. The atomic number. This means that it has 20 protons and 20 electrons. it has 21 neutrons.

5 0
3 years ago
Which of the following molecules would have the strongest London Dispersion Force?
weeeeeb [17]

Answer: D

Explanation:

London forces become stronger as the atom in question becomes larger, and to a smaller degree for large molecules. [4] This is due to the increased polarizability of molecules with larger, more dispersed electron clouds. The polarizability is a measure of ease with which electrons can be redistributed; a large polarizability implies that the electrons are more easily redistributed. This trend is exemplified by the halogens (from smallest to largest: F 2 , Cl2 , Br 2 , I 2 ). The same increase of dispersive attraction occurs within and between organic molecules in the order RF<RCL<RBr<RI, or with other more polarizable heteroatoms. [5] Fluorine and chlorine are

gases at room temperature, bromine is a liquid, and iodine is a solid. The London forces are thought to be arise from the motion of electrons.

7 0
3 years ago
What is the name of the molecule that is used to heat most of our buildings?<br><br> (Chemistry)
mario62 [17]

Answer:

Fluids (air/water) either as water vapour or oxygen and carbon dioxide.

Explanation:

Heat transfer occurs through conduction, convection or radiation.

Many aties, this involves fluids whose molecules have been activated by heated by heat, moving from hotter to cooler regions, allowing for heating or cooling of the rooms.

Building materials have varying conductivity.

7 0
3 years ago
Evaluate the following: 3.7 x 102m x 2.9 x 108 m
yulyashka [42]

Answer:

118201.68m6^2

Explanation: scientific notation

6 0
3 years ago
If the mass of a liquid is 60 g and the volume is measured at 15 ML, what is the density?
Dovator [93]

Answer:

4 g/ml

Explanation:

Density is defined as the amount of a substance (mass) in a certain volume.  So the equation is D = m/v.

For this example, D = 60 g/15 ml.  so the answer would be 4 g/ml.

6 0
3 years ago
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