Fill in the blanks with the appropriate word/s from the brackets.
Covalent compounds are formed by sharing electron pairs between non- metallic atoms. Non- metallic atoms having __,___,___ valence electrons [4, 5, 6, 7] share one, two or three pairs of electrons respectively.

Fill in the blanks with the appropriate word/s An atom is said to be a non-metal if it ___[gains/Ioses] one or more electrons.

Fill in the blanks with the appropriate word/s If combining atoms of a compound have nearly similar electronegativities the bond between them is _________ [electrovalent/covalent].

Fill in the blanks with the appropriate word/s from the brackets. NaCl an eletrovalent compounds is formed as a result of transfer of _____ [ one, two, three] valence electrons from metallic sodium to non- metallic chlorine atom. CaO is similarly formed as a result of transfer of ____ [ one, two, three] valence electron/s from metallic calcium to non- metallic oxygen and megnesium chloride by transfer of ____ [ one, two, three] valence electron/s from ____ [one, two] magnesium atom/s to ____[one, two] chlorine atom/s.

Fill in the blanks with the appropriate word/s Increase in nuclear charge of an atom ________ [decreases/increases] the tendency of the atom to lose electrons.

Fill in the blanks with the appropriate word/s Atoms with _______ [small/large] atomic radii &. _____[high/low]ionisation potential tend to gain electrons.

Fill in the blanks from the choices given below: In covalent compounds, the bond is formed due to the ............ (sharing/transfer) of electrons.

Fill in the blanks with the appropriate word/s An atom with a small atomic radii takes up electrons __________ [less/more] readily than an atom with a large radii.

Name the bond formed by a shared pair of electrons with both the electrons coming from the same atom.

Fill in the blanks from the choices given below : In covalent compounds, the bond is formed due to the ............ ( "sharing"//"transfer" ) of electrons.

Fill in the blanks with the appropriate word/s Periodicity in properties is observed in elements after definite intervals due to similar_____[electronic configuration, number of valence electrons, atomic numbers] of elements