Science, asked by Dewanshu19524, 1 year ago

how many number of element are possible for the 1st period of periodic table

Answers

Answered by tacostreetmlk

There are 18 across and 7 down.

Beastchaoz123: All other periods in the period table contain at least 8 elements, and it is often helpful to consider periodic trends across the period. However, period 1 contains only two elements, so this concept does not apply here.

Dewanshu19524: thanks bro

Answered by nancyyy

Hi,
Here's your answer:

>> Two elements

Explanation:
Period 1 in the periodic table follows duplet rule of arrangement i.e 2 electrons in the outermost shell are required, to make the electron stable.
➡️Therefore,Only two elements are present in the period 1 which are Hydrogen and Helium.

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