August 2016  Chemistry Regents #6-10

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6 The arrangement of the elements from left to right in Period 4 on the Periodic Table is based on

(1) atomic mass

(2) atomic number

(3) the number of electron shells

(4) the number of oxidation states

2    

7 Which diatomic molecule is formed when the two atoms share six electrons?

(1) H2 (3) O2

(2) N2 (4) F2

2    

8 Which formula represents a polar molecule?

(1) O2 (3) NH3

(2) CO2 (4) CH4

3    

 

9 Which element is least likely to undergo a chemical reaction?

(1) lithium (3) fluorine

(2) carbon (4) neon

4    

10 Which element has a melting point higher than the melting point of rhenium?

(1) iridium (3) tantalum

(2) osmium (4) tungsten

4    

 

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Questions 51-54 Questions 55-57 Questions 58-59 Questions 60-61 Questions 62-65 Questions 66-68 Questions 69-72 Questions 73-74  Questions 75-76  Questions 77-78  Questions 79-80  Questions 81-82  Questions 83-85

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