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SGC-Chem Mid Term
供稿人: Watson
  • 1. A Ca+2 has how many protons?
A) 22
B) 26
C) 14
D) 20
  • 2. What type of bond would form between lithium and bromine?
A) metallic
B) covalent
C) ionic
  • 3. Electrons in a bond between hydrogen and chlorine would be
A) electrons would not be involved
B) shared
C) donated/accepted
  • 4. Electrons in a bond between potassium and oxygen would be
A) elelctrons would not be involved
B) donated/accepted
C) shared
  • 5. What formula would result from the bonding of Be and N?
A) Be3N2
B) Be2N3
C) BeN
D) BeN2
  • 6. Which element would have the LARGEST atomic radius
A) Fr
B) Li
C) Rb
D) K
  • 7. Which element would have the LARGEST electronegativity?
A) P
B) Cl
C) S
D) Ar
  • 8. Which of the following would have the LARGEST ionization energy?
A) As
B) Ca
C) K
D) Kr
  • 9. Why does atomic radius increase down a group?
A) more energy levels
B) higher mass
C) less energy levels
D) more protons
  • 10. What is the shape of an s orbital?
A) sphere
B) flower
C) dumbell
  • 11. How many orbitals total are found in a p sublevel?
A) 2
B) 3
C) 6
D) 1
  • 12. What element is this the electron configuration for 1s2 2s2 2p3?
A) C
B) N
C) O
D) Si
  • 13. After filling energy level 6s, Aufbau principlae says what energy level must be filled next?
A) 7s
B) 5f
C) 4f
D) 5d
  • 14. Which of the following is the correct nobel gas notation for Mn?
A) [Ne] 4s2 3d5
B) [Ar] 4s2 3d5
C) [Ar] 1s2 2s2 2p6 3s2 3p6 4s2 3d5
D) [Ar] 4s2 3d4
  • 15. According to Hund's rule,
A) Each p orbital must contain 1 electron before any of them can accept a second
B) The 1st p orbital must be full before the 2nd and 3rd p orbitals can accept any electrons
C) Orbitals can only hold 1 electron each
D) 4s must be filled before 3d
  • 16. Name the compound: BeF2
A) beryllium (II) fluoride
B) beryllium difluoride
C) beryllium fluoride
  • 17. Name the compound: FeP
A) iron phosphate
B) iron (III) phosphide
C) iron (III)phosphate
D) iron phosphide
  • 18. Name the compound: C2S5
A) dicarbon pentasulfate
B) carbon sulfide
C) carbon (V) sulfide
D) dicarbon pentasulfide
  • 19. Write the formula: potassium oxide
A) P2O
B) PO
C) K2O
D) KO
  • 20. Write the formula: lithium sulfite
A) LiSO3
B) Li2SO3
C) Li2SO4
D) Li2S
  • 21. Write the formula: hexaboron tribromide
A) BBr3
B) B6Br3
C) BBr
D) B3Br6
  • 22. What is the molar mass of Mg?
A) 6.02x1023 g/mol
B) 12g/mol
C) 22.4g/mol
D) 24g/mol
  • 23. We know that the bond between Cl and Cl is a ________________________ because the difference between the two atoms electronegativity is _____________________.
A) nonpolar covalent, between 0.3 and 0.8
B) ionic, higher than 0.8
C) nonpolar covalent, less than 0.3
D) polar covalent, less than 0.3
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