Answer:
and
Explanation:
All the carbon group atoms, having four valence electrons, form covalent bonds with nonmetal atoms; carbon and silicon cannot lose or gain electrons to form free ions, whereas germanium, tin, and lead do form metallic ions but only with two positive charges
the similarities is that Both carbon and silicon commonly form compounds, easily sharing electrons with other elements. Carbon will make multiple bonds with other carbon molecules by forming single, double and triple covalent bonds. ... Carbon and silicon are often combined, with carbon serving as silicon's backbone.
Answer: The final stage of the life cycle of a tree is when it has fully grown and reached the ... You should be confident in your supplier's approach to sustainability. ... This is the first occasion you will see a stem and perhaps a couple of leaves. ... The next phase is the sapling stage, this is when the sprout continues to grow and has ...
Explanation:
2.85 grams
4.28x10^2 atoms (40.08 grams of Ca/ 6.02x10^23)
<span>(A) Br2 +2e -> 2Br*-
(B) Na -> Na^+ +e) you need to balance the number of electrons, so multiply (B) x 2 (B) (2Na -> 2Na^+ +2e)
now, add them up and cancel the electrons (A+B) (2Na +Br_2 +2e ->2Br^- +2Na^+ +2e ) </span>
Answer:
The incorrect statement is option B and D.
Explanation:
Carbohydrates are more generally is known as the sugars that are composed of the carbon, hydrogen and oxygen atoms. Monosaccharides are the single unit of carbohydrates while disaccharides are the sugars that contain two molecules of the sugar and similarly saccharides with multiple sugars are called polysaccharides. The general chemical formula of the carbohydrates Cn(H2O)n, however the complex sugars does not follow this formula. Amino sugars are contains NH2 in their formula so carbohydrates not necessarily contains only H, O, AND C always.
Thus, the incorrect answer is - option B and D.
