The electron configuration of an element is shown below. 1s22s22p63s23p6

Name the group this element belongs to in the periodic table and explain your answer.

Based on the electron configuration, write one chemical property of this element. (8 points)

Look at the given electronic configuration

1s²2s²2p⁶3s²3p⁶

Group of the element:

We can see that this element has completely filled p-orbital

Which means that this element is present in the right-most group of the periodic table

Hence, this element is present in the 18th group

Chemical property of the element:

We know that all 18th group elements are noble since they have completely filled shells

Since the given element is also present in the 18th group;

The given element is Noble in nature and hence, will be unreactive

The element belongs to group 18. It's a noble gas and is inert, or chemically un-reactive.

Explanation:

Since the electron configuration shows that there are 18 electrons, this means that there are 8 valence electrons and the element belongs in group 18.

The elements in group 18 of the periodic table are called the noble gases and since they have a full outer shell, they are mostly un-reactive to other elements.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).