شرح للكيمياء و أسئلة مراجعة

[سحر البيان]

المشاركة الأصلية كتبت بواسطة عبير الفيفي 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

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