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10 Questions

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Chemistry
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1. Gallium is the one with the higher Ea1:
Calcium -2.37 kJ/mol
Gallium -28.9 kJ/mol
2. (a) Alkali metal: A.ns
1
(b) Alkaline earth metals: B. ns
2
(c) Halogens: ns
2
np
5
(d) Noble Gases: H. ns
2
np
6
3. An atom with:
14 electrons: 1s
2
2s
2
2p
6
3s
2
3p
2
Block designation: p
-
20 electrons: 1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
Block designation: s
-
32 electrons : 1s
2
2s
2
2p
6
3s
2
3p
6
3d
10
4s
2
4p
2
Block designation: : p
-
4. Largest atom in the fifth period of the periodic table:
Rb (Rubidium)
5. Full electron configuration of the element with the atomic number of
z=9 ; 1s
2
2s
2
2p
5
z=20 ; 1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
z=26 ; 1s
2
2s
2
2p
6
3s
2
3p
6
3d
6
4s
2
z=33; 1s
2
2s
2
2p
6
3s
2
3p
6
3d
10
4s
2
4p
3
6. A -- 2A
B -- 1A
C -- 3A
7. Largest atomic radius: Ga
Smallest atomic radius: F
8. Which is not a group 1A element: Al
Which is not a group 2A element: Zn

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1. Gallium is the one with the higher Ea1: Calcium -2.37 kJ/mol Gallium -28.9 kJ/mol 2. (a) Alkali metal: A.ns1 (b) Alkaline earth metals: B. ns2 (c) Halogens: ns2 np5 (d) Noble Gases: H. ns2 np6 3. An atom with: 14 electrons: 1s22s22p63s23p2 20 electrons: 1s22s22p63s2 3p6 4s2 32 electrons : 1s22s22p63s23p63d104s24p2 Block designation: pBlock designation: sBlock designation: : p- 4. Largest atom in the fifth period of the periodic table: Rb (Rubidium) 5. Full electron configuration of the element with the atomic number of z=9 ; 1s2 2s22p5 z=20 ; 1s22s22p63s2 3p6 4s2 z=26 ; 1s22s22p63s23 ...
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