Question

if an element contains two shells only and it's outershell contains five elections then to which group the element belongs in the periodic table. Name the element. Predict it's period.​

Answer 1

Answer:

nitrogen

Explanation:

the elements which have 2 shells then it's from 2nd period and the nitrogen belongs to group 15 .

Answer 2

The element is nitrogen and it belongs to the 2nd period and group 15.

• The elements contain two shells means it contains K and L shells. The K shell has 2 electrons and the L shell has 5 electrons.
• Thus, the atomic number of the element is 2+5=7.
• Hence the element is nitrogen or N.
• Nitrogen belongs to period 2 in the modern periodic table and it belongs to group 15 in the modern periodic table.