1.Noble gases have comparatively large atomic sizes as they have vander waals radii which is larger than both the ionic and covalent radii
Reducing Sugars :
Sugars that contain aldehyde groups that are oxidised to carboxylic acids are classified as reducing sugars.
Sugar has many polar covalent bonds, in the C-O-H groups, and the molecules of sugar fit easily into the hydrogen bonded microstructure of liquid water.
Essential amino acids
(a) These must be supplied to our diet as are not synthesized in body.
Note: Histidine and arginine are essential i.e. can be syntrhesized but not in quantities sufficient to permit normal growth.
Non – Essential Amino acids
These amino acids are synthesized in body.
Some of them are
These are as follows:
(1) Glycine (2) Alanine (3) Tyrosine (4) Serine (5) Cystine (6) Proline (7) Hydroxyprocine
(8) Cysteine (9) Aspartic acid (10) Glutonic acid