Question

Valency the combining capacity of an atom is expressed as the number of single bonds the
can form or the number of electrons an element gives up or accepts when reato
compound. Atoms are called monovalent, divalent, trivalent or tetravalent acting to
they form one, two,
three or four bonds.
For the purposes of describing chemical behaviour, an atom can be considered as a
charged nucleus surrounded by negatively charged electrons orbiting in concentre spher
shells. The number of positive charged in the nucleus determines how many electrons na
surround the nucleus; as atomic number increases, the electron shells are filled and
those nearest the nucleus.
The valency of an atom is determined by the number if electrons in the cute most
atom exists in its most stable configuration when its outermost shell is complete
other atoms, if the valence shell of the atom is nearly complete as in chlorine ar
atom will tend to accept electrons to complete it: if the valence shell has a no
and other metals, the atom will tend to lose these electron
becomes a completed outermost shell
.
Q.1 How will the bond formation take place to form a compound​

Answer 1

A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.