Electronegativity ........... (increases / decreases) down the group and ................... (increases / decreases) along the period.

Atomic radii ............................ (increases / decreases) along the period and .............. (increases / decreases) down the group.

Speed of sound ...................(increases/decreases) with temperature.

Pressure in a liquid ........ ....... (increases/decreases) with depth.

Across a period the valence electrons ............. (increase/decrease) while down a group they ................ (remain same/increase by 1).

Density of alkali metals ................... (decreases / increases) with atomic number.

As we move down the group, the atomic size increases or decreases ?

(a) Electropositive nature of the element(s) increases down the group and decreases across the period (b) Electronegativity of the element decreases down the group and increases across the period (c) Atomic size increase down the group and decreases across a period (left to right) (d) Metallic character increases down the group and decreases across a period On the basis of the above trends of the periodic table, answer the following about the electron with atomic number 3 to 9 (a) Name the most electropositive element among them (b) Name the most electronegative element (c) Name of the element with smallest atomic size (d) Name the element which is a metalloid (e) Name the element which shows maximum valency.

Surface tension decreases with increase in .......

Fill in the blanks from the choices given below: Down the group, electron affinity ...................... . (increases, decreases, remains same).

Viscosity of liquid decreases with increase in........