لو سمحتي ابغى حل الاسئلة هذه
1- the pressure is defined as
a- force per unit volume
b- b- area per unit force
c- force per unit area
d- d- volume per unit force
2- the diatomic gases of the following is
a- n2, cl2, br2, he2
b- b- n2, cl2, br2, o2
c- n2, cl2, f2, o2
d- d- n2, cl2, s2, o3
3- the monoatomic gases of the following is
a- ne
b- o3
c- o2
d-ch4
4- the homonuclear diatomic gases of the following is
a- n2
b- hcl
c- br2
d-o3
5- the heteronuclear diatomic gases of the following is
a- n2, cl2, br2, he
b- b- hf, hcl, hbr, hi
c-n2, cl2, f2, o2
d-n2, cl2, s2, o3
6- the heteronuclear triatomic gas of the following is
a- n2
b- co2
c- hbr
d- o3
1- a pair of electrons that is shared between two atoms is
a- a covalent bond. B- a lone pair.
C- a double bond. D- an ionic bond.
2- a pair of electrons that is unshared on atom is
a- a single covalent bond. B- a lone pair.
C- a double covalent bond. D- an ionic bond.
3
- a two pairs of electrons that are shared between two atoms are
a- a single covalent bond. B- a lone pair.
C- a double covalent bond. D- an ionic bond.
4- a pair of electrons that is lost from an atom and accepted by another one forms
a- a single covalent bond. B- a lone pair.
C- a double covalent bond. D- an ionic bond.
5- the kind of bonds in the chlorine molecule (cl[/size][/font]2) and bromine molecule (br2) is:
a- covalent in chlorine molecule and ionic in bromine molecule
b- covalent in chlorine molecule and covalent in bromine molecule
c- covalent in bromine molecule and ionic in chlorine molecule.
d- ionic in bromine molecule and ionic in chlorine molecule.
6- a favorable condition for two elements to form an ionic bond is
a- both should be electronegative
b- one should have low electron affinity and the other low ionization energy.
c- one should have high electron affinity and the other low ionization energy.
d- both should be highly electronegative
7- in an ionic compound
a- the cation is a l and the anion is non l
b- the cation is a nonl and the anion is l
c- the negative ion is a l and the positive is non l[/left]
d- both can be ls