1. Which of the following has a positive charge?
(A) proton
(B) neutron
(C) anion
(D) electron ANS = A
2. How many electrons are there in the valence shell of the O2–ion?
A 2
B 8
C 10
D 16
3. What is the formula of the compound formed between magnesium and oxygen?
A MgO
B Mg2O2
C Mg2O3
D MgO2
3. Which one of the following statements concerning elements in the Periodic Table is
correct?
A Elements of the same group all have the same number of electrons in the outermost
occupied electron shell.
B Elements of Group 16 occur as cations in ionic compounds.
C Oxides of elements in Groups 16 and 17 are basic.
D The halogens are all gases at room temperature.
Frontiers, E. (2023). CHM 101 EXAMS. Afribary. Retrieved from https://afribary.com/works/chm-101-exams
Frontiers, Edu "CHM 101 EXAMS" Afribary. Afribary, 14 Feb. 2023, https://afribary.com/works/chm-101-exams. Accessed 17 May. 2024.
Frontiers, Edu . "CHM 101 EXAMS". Afribary, Afribary, 14 Feb. 2023. Web. 17 May. 2024. < https://afribary.com/works/chm-101-exams >.
Frontiers, Edu . "CHM 101 EXAMS" Afribary (2023). Accessed May 17, 2024. https://afribary.com/works/chm-101-exams