بليزززززززز ساعدوني في حل هذي الاسئلة (كيمياء)

[عبير الفيفي]

السلام
لو سمحتو اللي يعرف الحل لايبخل

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


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