大学MOOC 普通化学(长春师范大学)1453506173 最新慕课完整章节测试答案
Chapter4Chemicalbondingandstructure
chapter4Test
1、单选题：
Phosphorus forms a compound with hydrogen called phosphine, PH 3 . This compound can react with a hydrogen ion, H + .which type of interaction occurs between PH 3 and H + ?
选项：
A: dative covalent bond
B: ionic bond
C: dipole-dipole forces
D: hydrogen bond
答案: 【 dative covalent bond 】
2、单选题：
The compound (CH3) 3 NAl Cl 3 has a simple molecular structure.which statement about (CH 3 ) 3 NAl Cl 3 is correct?
选项：
A: The bonds around the Al atom are planar.
B: (CH 3 ) 3 NAl Cl 3 molecules attract each other by hydrogen bonds.
C: The Al atom has an incomplete valance shell of electrons.
D: The molecules contain coordinate and covalent bonding
答案: 【 The molecules contain coordinate and covalent bonding 】
3、单选题：
Which pair of elements has chemical bonds of the same type between their atoms in the solid state?
选项：
A: magnesium and silicon
B: aluminium and phosphorus
C: chlorine and argon
D: sulfur and chlorine
答案: 【 sulfur and chlorine 】
4、单选题：
In which pair do the molecules have the same shape as each other?
选项：
A: H 2 O and CO 2
B: H 2 O and SCl 2
C: NH 3 and BH 3
D: SCl 2 and BeCl 2
答案: 【 H 2 O and SCl 2】
5、单选题：
Which element shows the greatest tendency to form some covalent compounds?
选项：
A: aluminium&nbs