Question

potassium and calcium belongs to _periods.​

Answer 1

Answer:

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A period 4 element is one of the chemical elements in the fourth row (or period) of the periodic table of the elements.

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Period 4 element.

Hydrogen Potassium

Calcium

Scandium

Titanium

Vanadium

Explanation:

gogal

Answer 2

Answer:

potassium and calcium belongs to 4th period.

Explanation:

We know tat in a periodic table there are seven periods and Potassium as well as Calcium are present in the 4th period.

Potassium having an atomic number 19 and Calcium having atomic number 20.

Both Potassium as well as calcium belongs to s-block elements.

s-block elements : These are those elements that are present in the periodic table and having a last electron present which enters the outermost orbit of s-orbital. We know that the s-orbital can accommodate only 2 electrons, so two groups which is (1 and 2) belong to the s-block elements of the periodic table.

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