Question

(a) What is a period in a periodic table? How do atomic structures (electron arrangements) change in a period with increase in atomic numbers from left to right?
(b) How do the following change on going from left to right in a period of the periodic table?
(i) Chemical reactivity of elements
(ii) Nature of oxides of elements
Give examples in support of your answer.

Answer 1

Answer:

(a) Period :

the interval of time is called period

atomic structure increase with the period because of increasing of atomic numbers they have no place to settle so that atomic structure increases

(b) chemical reactivity of elements

EXAMPLE:

increase of electrons