Bài tập trắc nghiệm và đáp án môn hóa đại cương

Bài tập trắc nghiệm và đáp án môn hóa đại cươngBài tập trắc nghiệm và đáp án môn hóa đại cươngBài tập trắc nghiệm và đáp án môn hóa đại cương

1.19 Which set of quantum numbers represents the outermost electrons in an atom with

Z = 30?

a)n=3, €=2, me= -2, ms =+1/2 b)n=4, £=0, me =0,m,=+1/2 and -1/2 c)n=3, £=2, me=+2,m;=-1/2 d) n= 4, €=0, mg= 1, m; =+1/2 and -1/2 |

1.20 Which sets of the three quantum numbers are acceptable?

1.21 Which sets of the three quantum numbers are acceptable?

l)n=4, €=3, me =-3 2)n=4, €=2, me =+3

3)n=4, €=1, me =2 4)n=4, €=0, m =0

a) 1,3,4 b) 1, 4 c)2.3.4 d) 3,4

122 Names of the orbitals correspond to n = 5, € = 2;:n = 4, €=3:;n=3,€=0]| respectively:

a) 5d, 4f, 3s b) 5p, 4d, 3s c) 5s, 4d, 3p d) 5d, 4p, 3s

1.26 The last electron of an S atom (Z = 16) has the set of quantum numbers (conventionally, electrons fill into orbitals in the order of mz from +¢ to -£):

a)n=3, €=2, me=-2, m;=+1/2 b)n=3, £=2, mg=+2, m; = -1/2

c)n=3,€=1, me=-1, m; =4+1/2 d)n=3,€=1,me=+1, m;,=-1/2

1.28 The valence electron configuration of CoỶ* ion (Z = 27) in the ground state is:

a) 3d° (no single electrons) b) 3d*#4s2 (exist single electrons)

c) 3d° (exist single electrons).d) 3d*4s? (no single electron) 1.30 The valence electron configuration of Fe** ion (Z= 26) in the ground state is:

1.31 The electron configuration of Cu?* ion (Z = 29) in the ground state is:

2.5 The position of Semen in periodic table has _ Hổ) II ktructure |

7 Period 4, group VIIB, cell 23 C b) Period 4, group VIIB cell2S= , cell 25 vác

(3) )?2322p"3523p°3d!94524p! 4) Is'2s°2p93°ap/Zế'túc'4p` } "3w26'És'4p` } XG Ast4p> |

2.27 Choose the correct statement Line of atoms Ca (Z = 20), Al (Z = 13), P (Z = 15),

(221) (2.21.) Chodse the i incorrect statement:

a)Ina

primary group, ip, electronegativity decreases from top to bottom Ak LO

_©)In the smaltperroth(except inert | gas), afom radius decreases from left to right \cảÄ

d)Metallicity decreases and non-metallic increases from left to right in the Small period Sal it AY `

(except inert gas)

2.32 Choose the correct circumstance The first ionization energy (I¡) of these atoms

with electron configurations 1s?2s?2p* (1), 1s22s?2p? (2), 1s*2s?2p® (3) and

1s?2s?2p3s! (4) increase in the direction of:

c)4 5152-53 d)4 >3 >2—I

2.34 Choose the correct statement:

a) The electronegativity of metal is bigger than the electronegativity of nonmetal

b) In the primary groups, the electronegativity increase from top to bottom

c) Ina period, alkali metals have the smallest electronegativity

d) The more differences about electronegativity of A and B then the bonding of A —

2.14 Atom have the outer layer configuration of 3d 54s! }s located in the periodic ott!

and had some characteristics as follows:

s=+6-

b) Period 4, group VIB, position 24, metal, the maximum positive oxidation number is

the minimum negative oxidation numbef-Q —_ (_

24, metal, the maximum positive oxidation number 1s

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a) Group ITA

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1.19 Which set of quantum numbers repre nt{ the oujermgst electrons Yn an atom with )

a)n=3, €=2, me= -2, ms =4+1/2 bin =4, £=0, m= 0.6

c)?=3,£€= 2 m¿ = +2, m: = -L/2 d)n=4,£=0,m¿;= Ì 7T CUZ7ãand-172 |

1.20 Which sets sets of the three quantum numbers € Œ < § đ n

(21) Which sets of the three quantum numbers are —

1.22 Names of the orbitals correspond to n = 5, f = 2 n=4,£€= 4 n= 3,

oq

b) 5p, 4d, 3s c) 5s, 4d, 3p d) 5d, 4p, 3s

1.26 The f an S atom WZ = 16) has the set of quantum numbers

ectrons fill into orbitals in the order of 7; from +€ to -£):

b)n=3, €=2, me=+2, m; = -1/2

d)n=3, €= 1, mg=+1, m;=-1/2

—

1.28 The valence electron configuration s6») ion (Z = 27) in the ground state is: ME

1.30 The valence electron configuration of(Fe`) ion (Z= 26) in the ground state is:

1.31 The electron configuration ofc on (Z = 29) in the ground state is:

2.5 The position of element in periodic table has the electron btructure

1s72s72p63s?3p63d°4s2

Is:

7 Period 4, group VIIB, cell 23 b) Period 4, group VIIB, cell 25

7 Period 4, group VIIA, cell 25 d) Period 4, group VB, cell 25

VIA of pkriod 4 is (respectively):

1) 1s?2s?2p°3s23p°3d44s? 2) 1s22s?2p°3s?3p°3d>4s!

3) 1s72s22p63s73p63d194s24p† 4) 1s^2s22p53s”3p63d194s14p°

2.27 Choose the correct statement Line of atoms Ca (Z = 20), Al (Z = 13), P (Z = 15),

K (Z = 19) in order of the radius R increase:

2.21 Choose the incorrect statement:

a) In a primary group, electronegativity decreases from top to bottom

b)In a secondary group, atom radius increases from top to bottom

c) In the small period (except inert gas), atom radius decreases from left to right

d)Metallicity decreases and non-metallic increases from left to right in the small period

(except inert gas)

2.32 Choose the correct circumstance The first ionization energy (I¡) of these atoms

with electron configurations 1s?2s?2p* (1), 1s*2s?2p? (2), 1s?2s?2p® (3) and

1s?2s?2p3s! (4) increase in the direction of:

a)lI >2 >3—>4 b)3>2> l4

c)4 5152-53 d)4 >3 >2—I

2.34 Choose the correct statement:

a) The electronegativity of metal is bigger than the electronegativity of nonmetal b) In the primary groups, the electronegativity increase from top to bottom

c) Ina period, alkali metals have the smallest electronegativity

d) The more differences about electronegativity of A and B then the bonding of A —

B the less polar distribution.