25.4 CHAPTER 25. EXERCISE SOLUTIONS
The atom ESAIE
End of chapter exercises ESAIF
1. (a) atomic
mass num-
ber
(b)electron
orbital
2. (a) false
(b)true
(c) true
(d)false
3. B4. B
5. A
6. C
7. B
8. (a)^54 Be
(b)^126 C
(c)^4822 Ti
(d)^199 F
9. (a)
[Ne] 3 s^23 p^1(b)
[Ne] 3 s^23 p^3
(c)
[He] 2 s^22 p^2
(d)
[He] 2 s^22 p^6
(e)
[Ne] 3 s^23 p^6
10. (a)78; 117; 78
(b)18; 22; 18(c)27; 32; 27
(d)3; 4; 3
(e)5; 6; 5
11. (a)Rh
(b) 17
(c) 9
12. B
13. 63 , 62 uThe periodic table ESAIG
End of chapter exercises ESAIH
1. (a) false
(b)true
(c) false
(d)false
2. (a) first ionisation en-
ergy
(b)period
(c) halogens
3. (a) Br>Cl
(b)Cl>Br(c)Cl>Br
(d)Br>Cl4. (a)(b)(c)(d)486 Chemistry: Chemical systems