nstructor Dr. Manoj Prasad. Pm.D Homework Assignment TA CHEM 2501 Spring 2018 De
ID: 575862 • Letter: N
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nstructor Dr. Manoj Prasad. Pm.D Homework Assignment TA CHEM 2501 Spring 2018 Department of Chemistry and Forensie Sclence-ssU Tossl Posts Homework Assignment-CHEM 2501 Chapter- Homework due at the beginning of class on 02/D6/18 Student's Name: .. Date: 01/30V18 Question 1. Chemical reactions occur as a result of: Attraction between opposite charges B) Nucleus-Nucleus interactions C Motion of electrons D) Like atoms interacting E) Combining two chemicals Answer: Question 2. What was long thought to be the difference between inorganic and A) B) C) D) E) The number of atoms The synthesis of organic compounds required a vital force The molecular weight Inorganic compounds exhibited a strong nuclear force Inorganic compounds were composed exclusively of transition metals Question 3: The following molecules are related in what manner? :o: H Point Recelued 0.5 A) B) C) D) E) They are isotopes They are constitutional isomers They are the same structure They are composed of different elements There is no relationship Question 4: A polar covalent bond is found in which of these compounds? Poit 0.5 A) H20 B) F2 C) NaC Answer: Question 5: What is electronegativity and how it is changed across the periodic table? Please explain in detail. Answer: Point Page 1 of 2Explanation / Answer
1.
(C) Motion of electrons
2.
(B) The synthesis of organic compounds required vital force.
3.
(B) They are constitutional isomers ( structural isomers - differ in chain length)
4.
(A) H2O
5.
Electronegativity:
The ability of an atom to attract the bond pair of electrons towards itself is called electronegativity of an atom.
In a period electronegativity will gradually increase from 1 st group to 17th group due to decrease in atomic radius.
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