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

Atomic size increases down a group of the periodic table. Explain.

What is meant by a group in the periodic table?

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

Assertion:The atomic size generally increases across a period and decreases down the group. Reason:Atomic size depends upon valence shell electronic configuration.

Ionisation energy increases on moving down a group in the periodic table.

(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.

Chlorine lies in which period and group of the periodic table:

Describe the trend of atomic size along a period and a group in the periodic table.

The largest group in Modern periodic table is

In general, the properties that decrease and increase down a group in the periodic table, respectively, are :