Question

Give two points of difference: Groups of modern periodic table and Periods of modern periodic table ?​

Answer 1

Answer:

here is the answer

Explanation:

There are seven periods in the periodic table, with each one beginning at the far left. A new period begins when a new principal energy level begins filling with electrons. Period 1 has only two elements (hydrogen and helium), while periods 2 and 3 have 8 elements. Periods 4 and 5 have 18 elements.

Answer 2

Explanation:

GROUPS OF MODERN PERIODIC TABLE :-

• There are 18. vertical columns in modern periodic table which are known as Groups.

• The atomic number of elements increases on moving down the group.

PERIODS OF MODERN PERIODIC TABLE:-

• There are 7 horizontal rows in modern period table which are known as Periods.

• The atomic number of elements increases on moving from left to right along a period.

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