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اختبار الكتروني درس Graduation of the properties of Elements in the Modern Periodic Table
اختبار الكتروني درس Graduation of the properties of Elements in the Modern Periodic Table
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اختبار خاص بالمعلم:
Asmaa abd el hameed Moneer
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صفك
1
The atomic radius is used as a measurement of the atomic size of the atom and its measuring unit is.....
metre
millimetre
nanometre
picometre
2
In period (2),the atomic size of oxygen (O8) is greater than that of.......
a
b
c
d
3
In periods,by increasing the atomic number,the...........
atomic size decreases
atomic size increases
atomic radius increases
no correct answer
4
Which of the following elements is a metallic element?..........
a
b
c
d
5
During the chemical reactions,metal atoms tend to ........
lose electrons and change into negative ions
gain electrons and change into negative ions
lose electrons and change into positive ions
gain electrons and change into positive ions
6
An element(x),whose atomic number is 13 so,the number of electrons in its ion is.........
8
10
11
12
7
The electronic configuration of sodium ion(Na+) is similar to that of.........
a
b
c
d
8
The electronic configuration of magnesium ion(Mg+2)is similar to all the following except.........
a
b
c
d
9
The difference between chlorine (Cl17) atom and chloride ion (Cl-)is the number of.........
energy levels
protons
neutrons
electrons
10
If you know that the atomic number of an element=11, which of the following figures represents the electronic configuration of its ion?
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