WorksheetsXI Chemistry Unit 2 Part 7
Total questions: 10
Worksheet time: 5mins
The half-filled d orbital has _____ possible exchanges.
5
10
14
15
The lowest energy orbital among the following is _____.
2s
2p
3s
3p
The electronic configuration is the arrangement of electron in _____.
shells
nucleus
sub shells
all of these
“All the orbitals are singly occupied”. This is _____.
Pauli’s exclusion principle
Aufbau principle
Zeeman effect
Hund's rule
The stability of half-filled orbitals are due to,
Symmetrical distribution of electrons
Degenerate orbitals
Symmetrical distribution of electrons and exchange energy
Exchange energy
Exchanging the position of electrons with the same spin is possible only in degenerate orbitals.
True
False
The electronic configuration of an atom with atomic number 19 is _____.
2,8,8,1
2, 8, 9
2, 10, 7, 2
2, 8, 7, 2
During exchange process, energy will be released and the released energy is called _____ energy.
Electron energy
Exchange energy
Orbital energy
Emission energy
What is the electronic configuration of Na? (Atomic number of Na is 11) _____.
1s2 2s2 2p7
1s2 2s2 3p5 3s2
1s2 2s2 2p6 3s1
1s2 2s2 3s1 3p5
Symmetrical configurations are less stable than the unsymmetrical configurations.
True
False
