Question

Give the trends shown by the following properties when we go down a group or from left to
right in a period in the modern periodic table – valency, atomic size, ionization potential, electronegativity

Answer 1

when we go from left to right

1) valency first increases then after 4 decreases.

2)atomic size decreases

3)ionization potential increases.

4)electronegativity increases

when we go down a group :-

1)valency remains same

2)atomic size increases

3)ionization potential decreases

4)electronegativity decreases