Question

- A A A - * A - A 21 - AaBbccc Aabbcc AaBC AaBb Cel 1 Normal 1 No Spac... Heading 1 Heading 2 Paragraph 1. What the different between mercury and methylmercury? 2. How does methylmercury affect aquactic organisms? 3. Describe the harmful effects of mercury on humans. 4. Define the following: a. Atomic number b. Atomic mass c. Radioisotopes d. Periodic table e. Isotopes 5. A.Who developed the periodic table?

Answer 1

Dear Student, kindly refer to the solution of all questions.

PV Zale_ _ _ Dear student 221911911111999 Mercury - Mercury is a chemical element represented as He those atomic numbers Methye mercury - Methyl mecuey represented. as a anothetallic cation It is an formed by the combination of Mercury and carbon. V Methylmecully is highly toxic and it can accumulate in the food chain this proving hazardous to fish, aquatic seganisme. Methyle- mercury can affect the digestive, immune and nevous system when gets accumulated in fish and shellfish. since the formation of methylmeicuey takes place in the aquatic lystem and since it is not easily and readily eliminated from Jorganisme, it keeps ou accumulating in I aquatic food chains .. The harmful effects of mecuey on Humans ! face as follows: (1) Inhalation of mercury napour can result in haumful effects on the newau, digestive and immune system and can also be lotal. 12) Exposure to mercury can affect the development t Tor unborn baby's slain. It can also affect the heart and their circulatory system P.T.O.

(3) the acute mencury poisoning can result Teemors, insomnia, muscle ateophy, weal disturbances in sensations Aus @ Atomic number Atomic number refers to the nomber peotons present in the nucleus of an atom. atom! It I determines the identity of an element. 6 Atomic mass Atomic mass refers to the numbers of peotons (and neutrons present in an atom. The peotone and neutions constitutes the mass of an atom. Radio isotopes Radiabatiobes que the radioactive otopes of elements. They are due to the unstable combination of peotons and neutions. These Radioisotopes will emit ladiation to change into a stable form. (d) Periodic Table Periodic table is the arrangement of chemical element in tabulae foem (consisting of lows (and columns). The elements are arranged on the basis of atomic numbel, electronic configuration and chemical properties. P.T.O.

1999999 Isotopes. Isotopes eefers to the variants of chemical element possessing same numbel of peotons but different number of neutions. the development of periodic table - by chemit Dmitri Mendeleen. 6 Best wishes !).