1. Which of the following atoms would be expected to have the largest radius? O
ID: 523087 • Letter: 1
Question
1. Which of the following atoms would be expected to have the largest radius?
O
Li
C
B
Ne
2. Which of the following atoms has 6 valence electrons?
C
F
Ne
S
He
3. Which of the following atoms will have no unpaired electrons?
Be
Na
Br
Si
4. What is the ground state electron configuration for oxygen (O)?
1s2 2s2 2p6
1s2 2s2 2p4
1s2 2p2 3d2
1s2 2p6
1s2 2s2 3s2 4s2
5. Which of the following elements would you expect to have the lowest first ionization energy?
Ne
He
Xe
Ar
Na
Ne
1. Which of the following atoms would be expected to have the largest radius?
O
Li
C
B
Ne
2. Which of the following atoms has 6 valence electrons?
C
F
Ne
S
He
3. Which of the following atoms will have no unpaired electrons?
Be
Na
Br
Si
Al4. What is the ground state electron configuration for oxygen (O)?
1s2 2s2 2p6
1s2 2s2 2p4
1s2 2p2 3d2
1s2 2p6
1s2 2s2 3s2 4s2
5. Which of the following elements would you expect to have the lowest first ionization energy?
Ne
He
Xe
Ar
Na
Ne
Explanation / Answer
1. Lithium is expedcted to have largest radius.
2.Sulphur has 6 valence electron
3.Si and Be has no unpaired electron
Be= (He)2s2, Si= (Ne)3s2 3p2
4.Ground state electron config of Oxygen= 1s2 2s2 2p4
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