soluble substances dissolves in solvents
Answer:
give us something else to work with or this is just the best guess
Answer:work function= 8.2×10-19J
Minimum wavelength of light required= 2.4×10-7m
Explanation:
The wavelength of incident light was given as 193nm. We have to convert this to meters and have 193×10-9m. Then we use it to find the energy of incident photon E. When E is found we now apply Einstein photoelectric equation to obtain the work function Wo since the kinetic energy of photoelectrons is known as 1.8×10-19J.
From this work function. We can obtain the minimum wavelength of light required. All these steps are shown in the image attached.
The correct analogy is that of "A big greedy dog stealing away a bone from a smaller dog."
An ionic bond is a bond formed formed between a metallic atom and a non-metallic atom.
The metallic atom is electropositive while the non-metallic atom is electronegative. Therefore, the metallic atom donates or gives up its electrons to the non-metallic atom which accepts the electrons.
During the formation of chemical bonds, only valence or outermost shell electrons are involved.
Metallic atoms have few valence electrons (between 1 to 3 electrons) while non-metallic atoms have many valence electrons (between 5 to 7 electrons).
Therefore the analogy by the student of a big greedy dog stealing away a bone from a smaller dog is correct because the non-metallic atoms takes the few electrons of the metallic atom and add to the many electrons they already have during the formation of an ionic bond.
Learn more about an ionic bond at: brainly.com/question/1225796
Answer:
45) Ca < Co < Se
46) Te < S < O
Explanation:
These questions are talking about periodic trends. Here are some things to know about periodic trends:
Electronegativity
- how well an element attracts an electron
- increases left to right and bottom to top on the periodic table
- noble gases are not included
- fluorine is most electronegative element, Francium is least
Atomic Radius
- the distance between nuclei
- increases from right to left and top to bottom on the periodic table
- the more electronegative an element is, the smaller it's atomic radius
- Francium has the largest atomic radius while fluorine has the smallest
Ionization Energy
- the energy required to remove an electron
- directly proportional to electronegativity
Metallic Character
- how closely an element's properties match those of a metal
- directly proportional with atomic radius
Hope this helps :)
