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WorksheetsPeriodic table ( Finish )
Total questions: 24
Worksheet time: 51mins
which of the following element is located in the same period with 14Si ?
32Ge
21Sc
11Na
38Sr
the properties of two elements ...................... are the similar
19K , 20Ca
31Ga , 32Ge
17Cl, 35Br
55Cs, 56Ba
The element which follow neon gas are located in the period
first
second
third
fourth
An element it's atomic no. = 42 , the number of half filled orbitals is
1
4
5
6
the first element in d-block
20Ca
24Cr
21Sc
29Cu
Chemists can identify the composition of some unknown salts by conducting a flame test. When potassium salts are heated in a flame, a purple color is observed.
This is due to the movement of electrons between energy levels. What is the electron configuration of a potassium atom at ground state?
1s2; 2s2; 2p6; 3s2; 3p6; 4d1
1s2; 2s2; 2p6; 3s2;3p6; 3d1
1s2; 2s2; 2d6; 3s2; 3d6; 4s1
1s2; 2s2; 2p6; 3s2; 3p6; 4s1
What electron configuration matches an oxygen ion? (Z=8)
1s22s22p63s2, 3p64s23d104p5
1s22s22p4
1s22s22p6
1s22s22p63s23p64s23d1
Write the electronic configuration for sodium Na (Z=11)
1s2 2s2 2p6
1s2 2s2 2p6 3s2
1s2 2s2 2p6 3s1
1s2 2s2 2p6 3s2 3p4
What electron configuration matches an oxygen atom?
(Z = 8)
1s22s22p63s2, 3p64s23d104p5
1s22s22p4
1s22s22p6
1s22s22p63s23p64s23d1
In 1s2, the 1 means
there is 1 electron
the electrons are in the 1st energy level
the shape is circular
there is a -1 charge
In 1s2, the s means
the shape of the orbital is circular
the shape of the orbital is figure 8
there are six electrons
it is neutral
Which electron configuration belongs to Copper (Cu)?
1s2 2s2 2p6 3s2 3p6 4s2 3d8
1s2 2s2 2p6 3s2 3p6 4s1 3d10
1s2 2s2 2p6 3s2 3p6 4s2 3d10
What is the correct representation for an orbital which has an "n" value of 4 and an "L" value of 2?
4d
4s
4f
4p
For a p sublevel, "L" equals ____.
0
1
2
3
Which rule is broken by this electron configuration?
the Aufbau principle
the Pauli exclusion principle
Hund's rule
Conservation of Energy
What values of ml can there be is l = 0 (s orbital)?
0
-1 to +1
-2 to +2
-3 to +3
What values of ml can there be is l = 3 (f orbital)?
0
-1 to +1
-2 to +2
-3 to +3
