9th Chemistry Chapter4 Structure of Molecules

Sr #	Questions	A	B	C	D
1	In the formation of ALF3, aluminum atom loses ___________ electrons.	1	2	3	4
2	Transfer of lectrons between atoms results in :	metallic bonding	ionic bonding	covalent bonding	coordinate covalent bonding
3	How many electrons does a triple covalent bond involve ?	eight	six	four	only three
4	Covalent bond involves the :	donation of electrons	acceptance of electrons	sharing of electrons	repulsion of electrons
5	The forces o f attraction that bind oppositely charged ions are called :	covalents bond	ionic bond	chemical bonding	duplet rule
6	Fundamentally , some forces of attraction hold atoms together in substances. These forces are called :	chemical bonds	ionic bonds	covalent bonds	octet rule
7	Ice floats on water because :	ice is denser than water	ice is crystalline in nature	water is denser than ice	water molecules move randomly
8	A ______ is formed by mutual sharing of electrons between two atoms	chemical bonding	ionic bond	octet rule	covalents bond
9	Which of the following atomic obey duplet rule?	O2	F2	X2	N2
10	Considering the electronic configurationof atoms which atom with the given atomic number wwill be the most stable one ?	6	8	10	12
11	When an electronegative element combines with an electropositive elemnt the type of bonding is	Covalent	ionic	polar covalent	coordinate covalent
12	Phosphorus belongs to third period of Group VA. How many electrons it needs to complete its valence shell.	2	3	4	5