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Hydrogen is smaller in size compared to other elements in Group 1 because it has only one electron and a smaller atomic radius than the rest of the elements in that group.

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1y ago

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The alkaline earth element having the largest atomic radius is found in period?

7th period because atomic size down the group increases. And Alkali Earth metals are found only in Group 1. The element is in Group 1 and period 7


Which element is smaller?

Hydrogen is the smallest element. It has only 1 energy level. It is a gas element.


What is the identity element of the quaternion group?

If you mean in the group {1, -1, i, -i, j, -j, k, -k}, the identity element is 1.


Which element is the first element in group 1?

If we look at the periodic table, we can see that the first element in Group I is Hydrogen.


What element is the 3rd element?

lithium is the third element. It is placed in group-1


Lithium the first element in group 1 has an atomic number of 3 the secound element in this group has an atomicnumber of what?

The second element in group 1 is beryllium, with an atomic number of 4.


What element in Group 1 has the largest atoms?

Cesium, which is in Group 1 of the periodic table, has the largest atoms. This is because as you move down a group, the atomic size generally increases due to the addition of more electron shells.


If an element has 1 valence electron what group is it in?

That element would be in the Alkali Metals (group one)


What element is Group 1 period 4?

element K, or potassium


In the periodic table which group of element are the most reactive?

group 1


What are element groups 1 and 7 called?

Element group 1 is called the alkali metals, while element group 7 is called the halogens.


What element of group 1 is not known as an alkali metal?

Hydrogen is in group 1 but is not an alkali metal.