CHEMISTRY HIGH SCHOOL

Why the radius of an atom cannot be determined precisely ?

Answers

Answer 1
Answer: The radius of an atom cannot be determined precisely because the atomic number would or might have an isotope. The results won't be accurate. 

Related Questions

Calculate the change in energy of an atom that emits a photon of wavelength 2.21 meters. (Planck’s constant is 6.626 x 10-34 joule seconds, the speed of light is 2.998 x 108 m/s)
Which metal has no reaction with dilute hydrochloric acid or hydrochloric acid and forms a black oxide
Research into nuclear fusion will likely require a large investment of time and money before it might be used as an energy source. Which statement best describes the benefits that would make the investment worthwhile? Fusion requires a large amount of energy and occurs in stars. Fusion produces large amounts of energy, and the fuel is found on Earth. Fusion produces no radioactive waste, and the fuel is plentiful. Fusion requires little energy to begin and would continue through a chain reaction.
How many elements are there
Why is water (H2O) considered the "universal solvent"?

What does the term compound mean?

Answers

A compound is a substance formed when two or more chemical elements are chemically bonded together.
compound is a thing that is composed of two or more separate elements; a mixture

What is the role of the judicial branch?to interpret laws
to write laws
to execute laws
to lead the military

Answers

Answer:

to interpret laws

Explanation:

Answer:

To Interpet Laws

Explanation:

Give the chemical name and formula for limestone.

Answers

CaCO3, it's called calcium carbonate :D
limestone      calcium carbonate         CaCO3
common        chemical name              formula

In 1803, the British chemist John Dalton proposed several atomic theories. Which one of his theories was later shown to be incorrect?I. Atoms are indivisible and indestructible particles.

II. All atoms of the same element are exactly alike.

III. Atoms of different elements are different.

IV. Atoms combine in specific numerical ratios to form compounds.

A. II only
B. II & III only
C. I & II only

Answers

Option C: I and II only.

The atoms have subparticles and the isotops are atoms of the same element that differ in the number of neutrons.

Which formulas represent compounds that are isomers of each other?H HH-C-H and H C-HH H2 HO-C-H and H C-OHH HH-C-C-C OH and H-C O-C-C-HH HH H HOH HH OH H4 H-C-C-C-H and H C C-HH H

Answers

Answer : The correct option is, (3)

Explanation :

Isomers : It is defined as the molecule that has the same chemical formula but  it has the different structures.

Same chemical formula means that the same number of elements are present in both the compounds.

In option 1,2 and 4, both chemical formula and the structure are different. So, the option 1 compounds are not the isomers of each other.

In option 3, the chemical formula is same but the structure are different. So, the option 3 compounds are the isomers of each other.

Hence, the correct option is, (3)
The answer is number 3

What component of plants makes them green?

Answers

chlorophyll is what makes a plant green 
leaves contain a pigment called chlorophyll, which makes the leaves turn green
this ok?
Other Questions
Which property would radon most likely have? A. It is stable. B. It is a solid. C. It is flammable. D. It is silver in color.
The total mass of the protons in an atom of gold-198 is approximately(1) 79 atomic mass units(2) 119 atomic mass units(3) 198 atomic mass units(4) 277 atomic mass units
When the solids ba(oh)2 and nh4scn are mixed, a solution is produced and the temperature drops. ba(oh)2 (s) 2nh4scn(s) → ba(scn)2 (aq) 2nh3 (g) 2h2o(l) which statement about the energetics of this reaction is correct? a. the reaction is endothermic and h is negative. b. the reaction is endothermic and h is positive. c. the reaction is exothermic and h is negative. d. the reaction is exothermic and h is positive.
Molding a shape from soft, malleable material (clay or plaster) or constructing a shape from harder material (such as metal or paper). Molding is what a child does with Play-Doh or origami.