Collision theory basically explains that gas-phase chemical reactions occur when molecules collide with sufficient kinetic energy.
Answer :
<em><u>Explanation For The Three States OF Matter On the Basis OF Characteristics Of Particles / Molecules OF Matter.</u></em>
<h3><em><u>S</u></em><em><u>o</u></em><em><u>l</u></em><em><u>i</u></em><em><u>d</u></em><em><u>:</u></em><em><u> </u></em></h3>
<em><u>In solids the molecules are closely packed . There is a strong force of attraction between the molecules and the space between them is very small (almost negligible). The molecules are , therefore, not free to move . They merely vibrate their mean positions . This makes solids hard and difficult to compress , giving them a fixed shape and size.</u></em>
<h3><em><u>L</u></em><em><u>i</u></em><em><u>q</u></em><em><u>u</u></em><em><u>i</u></em><em><u>d</u></em><em><u> </u></em><em><u>:</u></em><em><u> </u></em></h3>
<em><u>In the case of liquids , the molecules are not closely packed. They do not attract each other as strongly as the molecules of solids. Thus, the intermolecular spaces are larger and the molecules are able to move about more freely . This makes liquid flow and take the shape of the container into which it is poured. Thus, liquids have a fixed volume but no def</u></em><em><u>i</u></em><em><u>nite shape of their own .</u></em>
<h3><em><u>G</u></em><em><u>a</u></em><em><u>s</u></em><em><u> </u></em><em><u>:</u></em><em><u> </u></em></h3>
<em><u>In the case of gases, the molecules hardly attract each other. They lie far a part from each other and the intermolecular spaces are, therefore, very large. . The intermolecular force of attraction is so weak that the molecules have great freedom of movement . As a result , gases have neither a fixed shapenor a fixed volume . They completely full up spacw available to them. They can be easily compressed as well, thus decreasing the gaps between their molecules .</u></em>
Explanation :
<h3><em><u>H</u></em><em><u>o</u></em><em><u>p</u></em><em><u>e</u></em><em><u> </u></em><em><u>i</u></em><em><u>t</u></em><em><u> </u></em><em><u>w</u></em><em><u>o</u></em><em><u>r</u></em><em><u>k</u></em><em><u>s</u></em><em><u> </u></em><em><u>o</u></em><em><u>u</u></em><em><u>t</u></em><em><u> </u></em><em><u>!</u></em></h3>
Is soluble in water but not soluble in acetonitrile.
So i think its false
Bromine atoms usually end up with SEVEN valence electrons.
Bromine belongs to group 17 i.e. halogen group. Its atomic number is 35. The electron configuration of Bromine is 1s² 2s²2p⁶ 3s²3p⁶ 4s²3d¹⁰4p⁵. In the last shell, we see 4s²4p⁵, thus 2+5 = 7 valence electrons are present.
6.023 x 10²³ particles in 1 mole of Boron
1.61 x 10³⁴ particles in = 1.61 x 10³⁴ / 6.02 x 10²³
= 2.61 x 10³⁰ moles of Boron.