Give reason:
I.P. of elements increases across a period,

Give reason : Ionisation polential increases across a period-left to right.

Give reasons for the following: Ionization potential of the element increases across a period.

Give reasons for the following: Ionisation potential of the element increases across a period.

Give reason Atomic size decreases across a period but increases down a group of the periodic table

Assertion:Metallic character is highest at the extremely left side of the periodic table. Reason:Ionization enthalpy increases across a period.

Assertion:Boron can only form [BF_(4)]^(-) ,whereas aluminium forms [AlF_(6)]^(3-) . Reason:Ionization enthalpy increases across a period.

Give reason - The oxidising power of elements increases from left to right along a period.

(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.

State how density and melting points of elements varies across a period and down a group.

Give a reason for the following: Ionisation potential increases across a period, from left to right.