Electron configuration of gallium; 1s22s22p63s23p63d104s24p1. The removal of electrons Ga3+ is

First elecron: 4p Second electron: 4s Third electron: 4s

Which of the following does not obey Pauli Exclusion principle

1s: ↑↓ 2s: ↑↓ 2p: ↑↓ ↑↑ ↓↓

Which of the following statements is true about Balmer series.

The first line has the lowest frequency

Which of the following is NOT TRUE regarding Bohr's Atomic Theory?

At a particular orbit, electrons will radiate light of a certain wavelength

The electrons are arranged in 3d orbital according to

Hund's Rule, Pauli Exclusion Principle

Which statement represents the continuous spectrum.

Examples of continuous spectrum is rainbow.

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CHEMISTRY POPQUIZ CHAPTER 2

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About Matter and ATomic Structure

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1
Electron configuration of gallium; 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p¹. The removal of electrons Ga³⁺is
First elecron: 4p Second electron: 4s Third electron: 4s
First elecron: 4p Second electron: 4s Third electron: 3d
First elecron: 4s Second electron: 4s Third electron: 4p
First elecron: 3d Second electron: 4s Third electron: 4s
2
Which of the following does not obey Pauli Exclusion principle
1s: ↓↑ 2s: ↓↑ 2p: ↑↓ ↑↓ ↑↓
1s: ↑↓ 2s: ↑↓ 2p: ↑↓ ↑↑ ↓↓
1s: ↓↑ 2s: ↓↑ 2p: __ __ __
1s: ↓↑ 2s: ↓↑ 2p: ↑↓ ↑ ↑
3
Which of the following statements is true about Balmer series.
The IE of hydrogen can be calculated from any spectral lines
The first line has the lowest frequency
The series is in the ultraviolet
The lines become closer when the frequency decreases
4
The following species have same number of electrons at the highest energy leveL EXCEPT
K+
Ne
Al3+
Mg2+
5
Electronic arrangement Cu: 1s²2s²2p⁶3s²3p⁶3d¹⁰4s¹. Number of electron in copper atom when l=0
10
8
12
7
6
Electrons are filled in orbitals according to the following order,
1s, 2s, 2p, 3d, 3s, 3p, 4s, 4p
1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p
1s, 2s, 2p, 3s, 4s, 3p, 3d, 4p
1s, 2s, 2p, 3s, 3d, 4s, 3p, 4p
7
If the electronic configuration of cation, M⁵⁺is 1s²2s²2p⁶3s²3p⁶ , what would be the electronic configuration of M?
1s22s22p63s23p63d34s2
1s22s22p63s23p1
1s22s22p63s23p63d5
1s22s22p63s23p5
8
How many orbitals can be accomodated in an atom with a maximum quantum number n=3
10
9
2
14
9
A line in the Lyman series has a wavelength of 97.3nm. Find the electron transition that produce the line.
ni = 2, nf = 4
ni = 4, nf = 1
ni = 1, nf = 4
ni = 4, nf = 2
10
Which is the actual electronic configuration of Cu?
1s22s22p63s23p63d94s1
1s22s22p63s23p63d54s1
1s22s22p63s23p63d94s2
1s22s22p63s23p63d104s1
11
The series below has same spectrum region EXCEPT
Paschen
Pfund
Brackett
Balmer
12
Which of the following represents an electron in 3p orbital?
n=3 , l=1, m=+1 , s= ±1/2
n=3 , l=0, m=0 , s= ±1/2
n=3 , l=2, m=+1 , s= ±1/2
n=3 , l=0, m=+1 , s= ±1/2
13
Which of the following is NOT TRUE regarding Bohr's Atomic Theory?
Electrons can only be in particular orbits
Electron absorb energy as they move from a lower orbit to a higher orbit
At a particular orbit, electrons will radiate light of a certain wavelength
Each orbit correspond to definite energy level thus the energy is quantised
14
Which of the following is a possible set of quantum numbers for the unpaired electron in the orbital diagram below?
n=4, l=2, m=+3, s=+1/2
n=4, l=2, m=+2, s=+1/2
n=4, l=0, m=0, s=+1/2
n=4, i=1, m=0, s=+1/2
15
The electrons are arranged in 3d orbital according to
Aufbau principle, Pauli Exclusion Principle
Aufbau principle, Hund's Rule, Pauli Exclusion Principle
Hund's Rule, Pauli Exclusion Principle
Hund's Rule, Aufbau Principle
16
Choose the highest energy involved when an electron makes a transition.
n2 to n1
n4 to n2
n3 to n1
n4 to n3
17
Anomalous of electronic configuration involved Cr and Cu. Group and type stability for Cr is
6; partially filled of 3d orbital
6; half- filled of 3d orbital
6; partially filled of 3p orbital
11; compeletely filled of 3p orbital
18
n=3, l=2, m=?, s= -1/2; which value is not possible for m?
-1
0
-3
+2
19
Which statement represents the continuous spectrum.
This spectrum has definite line with specific wavelength.
Spectrum has no definite lines with specific wavelength.
Examples of continuous spectrum is rainbow.
The elements is filled into a gas discharge tube.
20
Calculate the wavelentgh, λ for the fourth line in Balmer series.
432 nm
410 nm
486 nm
654 nm

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