Question1:  What is the valency of iron in FeCO3 ?

Question 2:  A symbol not only represents the name of the element but also its

Question 3: The reason of bonding in ionic compounds is –

Question 4: Ionic compounds have melting points due to Ionic bonds.

Question 5: Polar solvent is –

Question 6:   ____________________ are identical to a normal covalent compound.

Question 7:  Molecular reactions are generally slow reactions and they are shown by ………….. Compounds.

Question 8:  Co-ordination bond is formed

Question 9:  A molecule of…….. Contains a triple bond.

Question 10:  Ionic compounds consist of ……………….. Charge ions.

Question 11:  The physical state of ionic compounds is …………

Question 12:  Asolution of a ………………. will contain both ions and molecules of the solute.

Question 13:  A reducing agent is a substance which can …………….

Question 14: Due tothe presence of strong electrostatic forces of attraction between ions, ioniccompounds.

Question 15: A compound conduct electricity in the fused state. The compound is made-up of…………….

Question 16: The duplet or octet structure of valence shell makes ……………… of an element  chemically ……………..

Question 17:  In the sodium chloride crystal, each Na+  ion is surrounded by Cl- ions and each Cl- ion by ………….  Na+ ions,

Question 18: Covalent bond is rigid and directional, it is responsible for………..

Question 19: Most covalent compounds have density that of water.

Question 20:  Thewater molecules easily break the . bonds between the oppositely charged ions.The ions  drift in water in all possible directions and hence electrovalent compounds n water.

Question 21: Incovalent compounds, the bond is formed due to the………………

Question 22: The electronegativities of atoms giving covalent molecules are generally…

Question 23: Atoms of the same element combine to form molecules by means of bonds.

Question 24:  Why do atoms share electrons in covalent bonds?

Question 25: In NH₄+ all the four bonds are….

Question 26: Allatoms other than noble gas atoms are reactive because:

Question 27: Among the following compounds identify the compound that has all three bonds (ionic,covalent and coordinate bond).

Question 28: The atomic number of oxygen is 8, The total number of electrons in the O²- on is.

Question 29: Melting and boiling points of covalent compounds are generally…………..

Question 30:  A polar covalent bond will be formed in which one of these pair of atoms:

Question 31: Ionic bond is present in which of the following species:

Question 32: The type of bonding in HCI molecule is:

Question 33: Formation of a compound through ionic bond the ionization energy of the metal ion.

Question 34: The molecule containing a triple covalent bond is:

Question 35: Covalent bond is formed between

Question 36: Valency of aluminium is:

Question 37:  Identify the molecule with a single covalent bond.

Question 38: Elements which gains electrons is known as:

Question 39:  Aluminium has a tendency to lose:

Question 40: Which of the following is a common characteristic of a covalent compound ?

Question 41: Whichelement forms two different stable chlorides ?

Question 42:  A gas having double bonds is

Question 43:  The ion formed by gain of electrons is known as:

Question 44:  Lead chloride is:

Question 45:  Hydrogen ion called proton due to:

Question 46:  Ananion carries negative charge because: