Number of valence electrons in carbon is

(a)

2

(b)

3

(c)

4

(d)

5

Atoms having 1, 2 or 3 electrons in its valence shell will readily form_____________

(a)

cation

(b)

anion

(c)

Calcium

(d)

electron

Bond formed between a metal and non-metal atom is usually____________

(a)

ionic bond

(b)

covalent bond

(c)

co-ordinate bond

(d)

metallic bond

Covalent bond is formed by_________

(a)

transfer of electrons

(b)

sharing of electrons

(c)

sharing a pair of electrons

(d)

transfer of electrons

Elements with stable electronic configurations have eight electrons in their valence shell. They are__________

(a)

Halogens

(b)

Metals

(c)

Noble gases

(d)

non metals

Which of the following atom can exist independently?

(a)

Magnesium

(b)

Chlorine

(c)

Hydrogen

(d)

Neon

The bond which is formed by mutual sharing of electrons is called ________bond.

(a)

ionic

(b)

covalent

(c)

co-ordinate covalent bond

(d)

all the above

Which of the following compound(s) possesses high melting point?

(a)

NaCI

(b)

MgCI₂

(c)

CCl₄

(d)

Both a & b

____________theory explains the formation of molecules

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Kossel - Lewis theory

The valency of noble gases is_____

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zero

In covalent bond formation, the sharing of________ electrons takes place in their outermost shell.

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unpaired

__________ & ___________atoms have similar electro negativities

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Carbon & hydrogen

Ionic compounds are________ in nature.

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solid

Octet rule

(1)

covalent bond

Ionic bond

(2)

donor atom

Atomic bond

(3)

Electrovalent bond

Atom which accepts electron pair

(4)

acceptor bond

Atom which provides electron pair

(5)

Noble gases

In the formation of compounds, the inner shell electrons of an atom involve in bonding.

Ionic compounds have low melting and boiling point

Greater the charge of the cation greater will be the ionic character

Water, acetone, benzene, toluene, turpentine

Platinum, palladium NaBH₄, CrO₃,

Explain Octet rule with an example.

Write a note on different types on bonds?

Why are Noble gases inert in nature?

What is chemical bond?

What are reducing agents? Give examples.

List down the differences between Ionic and Covalent compounds.

Discuss in brief about the properties of Coordinate covalent compounds.