Tin, because it has five energy levels with four electrons in the fifth level
.
Explanation:
Tin has an electronic configuration as
1s2,2s2,2p6,3s2,...........4d10, 5s2,5p2
They have four valence electrons in their outer shell
Among the four diagrams given Tin is least reactive because the atomic radius of tin is largest among all four options. Due to large atomic radius electronegativity decreases and hence Tin is the least reactive element among Neon, Chlorine, gallium and tin.
The electronegativity of an element is its tendency to complete its octet by attracting electrons towards itself. Also tin is at the lowest place in the periodic table among all the four mentioned elements, its ionization energy is also low hence less electronegative and least reactive.
No. False
Genes are the source of information where the individual is shaped and formed. These are not dependent on the cell type rather, cell types are formed by certain activation in these genes. They are the artist that trigger the formation and function of these cells.
Answer:
Sandy soil or Coarsely Textured Soils
Explanation:
All soils that have high amount of sand (sandy soil) or the one which have coarse texture are poor in organic matter retention and thus have low organic matter content. These soils are highly permeable and thus are unable to hold soil moisture and organic matter.
On the other hand they have rich salt content because they are in touch with salty water of sea or oceans.