Chemistry
Atomic Structure
Page 10 of 13
#73 Which pair are isobars?
A) 12C and 14C
B) 1H and 2H
C) 14C and 14N
D) 35Cl and 37Cl
Answer: C
#74 Which pair are isotopes?
A) 1H and 2H
B) 14C and 14N
C) 23Na and 24Mg
D) 16O and 16N
Answer: A
#75 Which pair are isotones?
A) 12C and 14C
B) 14C and 15N
C) 1H and 2H
D) 16O and 17F
Answer: B
#76 Energy of an electron becomes more negative when it is:
A) Farther from nucleus
B) Closer to nucleus
C) Ionized
D) At infinity
Answer: B
#77 Ionization of hydrogen corresponds to n equal to:
A) 1
B) 2
C) Infinity
D) 3
Answer: C
#78 Transition from n = 3 to n = 2 in hydrogen lies in:
A) Lyman series
B) Balmer series
C) Paschen series
D) Brackett series
Answer: B
#79 Possible values of l for a given n are from:
A) 1 to n
B) 0 to n - 1
C) -n to +n
D) -l to +l
Answer: B
Page 10 of 13
Register or Login for comments
Comments: