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WorksheetsQuiz Electronic Configuration & Classification of Element
Total questions: 20
Worksheet time: 40mins
The X3+ ion has proton number of 26. Choose the correct electron configuration for X3+ ion. (The letter X3+ is not the actual symbol of the ion)
1s2 2s2 2p6 3s2 3p6 3d5
1s2 2s2 2p6 3s2 3p6 3d3 4s2
1s2 2s2 2p6 3s2 3p6 3d6 4s2
1s2 2s2 2p6 3s2 3p6 3d8
Choose the correct electron configurations represents an atom that forms a simple ion with a charge of -2.
1s2 2s2 2p6 3s2 3p6 3d7 4s2
1s2 2s2 2p6 3s2 3p6
1s2 2s2 2p6 3s2 3p4
1s2 2s2 2p6 3s2
The element M is in Period 4 and forms M2+ ion with six electrons in 3d orbital. Choose the correct statement about the M and M2+ ion. (The letter M & M2+ are not the actual symbol of the element and ion respectively)
M has six valence electrons.
M2+ ion is more stable than M3+ ion.
M has four unpaired electrons.
M2+ has 26 electrons
The element Q have four electrons in s- orbitals and four electrons in p-orbitals. Choose the correct statement about Q. (The letter Q is not the actual symbol of the element)
Q is an element of Group 6
Q can formed Q2+ ion
Q has four valence electrons
Q exist as a diatomic element
The element G has two electrons in first energy level, eight electrons in second energy level, 13 electrons in third energy level and one electrons in fourth energy level. Choose the correct statement about G. (The letter G is not the actual symbol of the element)
G is s-block element.
G formed G3+ ion by removing three electrons from d-orbital
G has six unpaired electrons.
The highest electrons in atom G has set quantum n = 3, l = 2, ml = 2
The ion contains paired electrons in 3d orbitals is __________
Ti2+
Co4+
Fe3+
Cu+
The electron configurations of the Group 15 element has the electrons in the highest sublevel energy_________
3p3
4s2 3d3
2p5
3d5
The ion Z2- has the same electron configuration as the noble gas, neon. Choose the incorrect statement about Z. (The letter Z2- and Z are not the actual symbol of the ion and element respectively)
Z is a Period 2 element
Z is a block p element
Z has no unpaired electrons
Z exists as a diatomic element.
The element R maybe removed two electrons or three electrons from valence shells to form R2+ and R3+ ions respectively. R2+ ion has 24 electrons. Choose the incorrect statement about R and its ion. (The letter R, R2+ and R3+ are not the actual symbol of the element and ions)
R2+ ion is more stable than R3+
R is in Group 8
R and R2+ have same number of unpaired electrons
The first two electrons removed from R are from the fourth energy level.
The highest electron in atom J has the quantum number n = 3, l = 1, ml = -1. Choose the incorrect statement about J. (The letter J is not the actual symbol of the element)
J has 13 protons
J can form J+ ion
J p-block element
J is a metal
The element W is in Period 4 and Group 5 of the Periodic Table. The correct electronic configuration of the element W at ground state is __________________________. (The letter W is not the actual symbol of the element)
1s2 2s2 2p6 3s2 3p6 3d5
1s2 2s2 2p6 3s2 3p6 3d3 4s2
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3
1s2 2s2 2p6 3s2 3p6 3d5 4s2
The electronic configuration of X3+ ion is [Ar]3d10. Identify the position of the element X in the Periodic Table. (The letter X and X3+ are not the actual symbol of the element and ion respectively)
Period 3, Group 10
Period 3, Group 13
Period 4, Group 13
Period 4, Group 3
Y2+ ion has 11 electrons in the third energy level. Choose the correct statement about Y. (The letter Y and Y2+ are not the actual symbol of the element and ion respectively)
Y is p-block element
Y has 13 protons
Y has 5 valence electrons
Y has one unpaired electron
The valence configuration of the following atoms that can form ion with a charge 3+ except
3s2 3p3
4s2 3d1
3s2 3p1
4s1 3d5
Choose the element that does not contain unpaired p-electrons in its valence shell
15P
18Ar
16S
13Al
Which of the following electron distribution in a valence shell of carbon?
Z has fully filled in 4s orbital and half-filled in 3d orbital. Which of the following is the orbital diagram of Z4+? (The letter Z and Z4+ are not the actual symbol of the element and ion respectively)
Which outer electron configuration would you expect to correspond to most reactive metal?
2s2
4s2
6s1
2s1
Which outer electron configuration would you expect to correspond to a most reactive non-metal?
2s2 2p1
2s2 2p5
3s2 3p4
5s2 5p5
Which species has the greater number of unpaired electrons?
Cr3+
Fe3+
P
Ge
