[سسكرهـ]

بـــــــــآك ..ّ~

رجعت ومعـآي تست بانك 8 بصراحه ماذاكرته بس الي ذاكره وحاب يحل ويضيف تعليقه

نكون مشكورين له ومنهـآ يراجع معلومـآته وربي يوفقه بالفل مارك

:)

Chapter 8: Periodic Relationship
among the Elements

1. The alkaline earth ls are found in _______ of the periodic table.
A. Group 1A
B. Group 2A
C. Group 7A
D. Group 8A

2. How many valence electrons does a boron atom have?
A. 1
B. 3
C. 5
D. 7

3. Which ion is isoelectronic with Ar?
A. Ni2+
B. F-
C. Br-
D. K+

4. Which of these choices is the electron configuration of the iron(III) ion?
A. [Ar]4s23d3
B. [Ar]4s13d5
C. [Ar]3d5
D. [Ar]3d6
5. In what group of the periodic table is the element with the electron configuration
[Ar]4s23d104p1?
A. 1A
B. 2A
C. 3A
D. 4A

6. Which of these elements exhibits chemical behavior similar to that of potassium?
A. magnesium
B. sodium
C. beryllium
D. chlorine

7. Which of these ground-state ions has unpaired electrons?
A. P3-
B. V5+
C. S2-
D. Sc2+

8. If the radius of atom X is greater than the radius of atom Y, then it is also likely that
A. X has a larger electron affinity than Y does.
B. X has a larger effective nuclear charge than Y does.
C. X has greater llic character than Y does.
D. X has a larger first ionization energy than Y does.
9. The second ionization energy of Mg is ________ than its first ionization energy, and is __________ than the second ionization energy of Na.

A. higher, higher
B. lower, higher
C. higher, lower
D. lower, lower


10. Arrange these ions in order of increasing ionic radius: K+, P3-, S2-, Cl-.


A. Row 1
B. Row 2
C. Row 3
D. Row 4
E. Row 5