In the carbon family the melting points of the elements decrease on descending the group because the interatomic bonds become
Stronger as the size of the atom increases
Weaker as the size of the atom decreases
Stronger as the size of the atom decreases
Weaker as the size of the atom increases

The size of potassium atom is greater than the size of sodium atom. Give reason.

Give reasons why? The size of cation is smaller than the size of parent atom.

Increase in atomic size down the group is due to

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

The atomic size of lithium is larger than the atomic size of beryllium. Give reason.

The size of the trivalent cations in the lanthanoid series decreases steadily as the atomic number increases. What is this known as ?

(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.

On moving from left to right in a period in the periodic table, the size of the atom.

What is the trend in the atomic size in a group, does it increase or decrease?

The atomic size of beryllium is smaller than the atomic size of lithium. Give reason.