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Worksheetschemistry 9 chapter 1 2nd quiz
Total questions: 10
Worksheet time: 5mins
Which one of the followings has high energy level?
K
L
M
Q
Various elements have different numbers of electrons, these electrons are configuration around the nucleus in the atom, this order is called the.............
Energy level
Electron configuration
Orbitals
Hund’s rule
This principle shows that secondary energy levels are filled with electrons according to their energy level from the lowest to the highest they follow this order.
Orbital 1s is filled first with electrons then 2s then 2p then 3s then 3p then 4s then 3d and so far;
1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f ……
Hund’s rules
Electron configuration
Aufbau principle
Electron
Write the electron configuration for the following element.
Be
1s1
1s2
1s2 2s1
1s2 2s2
Write the electron configuration for the following element.
Ne
1s2 2s2 2p4
1s2 2s2 2p5
1s2 2s2 2p6
1s2 2s2 2p6 3s2
Write the electron configuration for the following element.
Mg
1s2 2s2 2p6 3s2 3p2
1s2 2s2 2p6 3s2 3p1
1s2 2s2 2p6 3s2
1s2 2s2 2p6 3s1
Write the electron configuration for the following element.
Al
1s2 2s2 2p6 3s2 3p1
1s2 2s2 2p6 3s2
1s2 2s2 2p6 3s1
1s2 2s2 2p6
Write the electron configuration for the following subshells?
P3
This rule shows that no two electrons are doubly occupied sub shell (secondary level) unless its orbitals are singly filled.
Aufbau principle
Hund’s rule
Electron configuration
Energy levels
Write the electron configuration for the following element.
Ar18
1s2 2s2 2p6
1s2 2s2 2p6 3s2
1s2 2s2 2p6 3s2 3p4
1s2 2s2 2p6 3s2 3p6
