Question

Answer the following questions based on the element with atomic number 3 to 9
1st name the element with smallest atomic radius
2 name the element which Show maximum valency
3 name the element which is metalloid
4 Name the element which is most electropositive
5 Write the chemical formula of the compound formed when the element of atomic number 6 and 8 reacts together

Answer 1

Answer:

1 lithium

2 6-C-carbon

3 B boron

4 8-O-oxygen

Answer 2

The elements from atomic numbers 3 to 9 are Li, Be, B, C, N, O, and F.

1. As we move from Li to F the atomic radius decreases so, F has the lowest atomic radius.
2. C shows maximum valency.
3. "B" is metalloid.
4. Li is most electropositive.
5. The element with atomic number 6 is C and the element with atomic number 8 is O. Hence the formula of the compound is CO or carbon monoxide.