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3 years ago

How many groups and periods are present in the periodic table?

Chemistry

2 answers:

PilotLPTM [1.2K]3 years ago

7 0

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.

Elenna [48]3 years ago

6 0

Answer:

<h2>18 groups</h2>

In the periodic table, there are 7 periods and 18 groups.

Explanation:

#CARRY ON LEARNING

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Hi there!
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3 years ago

How many groups and periods are present in the periodic table?​

How many groups and periods are present in the periodic table?