Question

Atomic number of Element A is 11 and that of element B is 9. Write the formula of    the compound formed when A combines with B. 
    b) Find the group of these elements. 
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Answer 1

Answer:

Atomic number of Element A is 11 and that of element B is 9. Write the formula of    the compound formed when A combines with B. 

    b) Find the group of these elements. 

Explanation:

Formula is

A B

1 1

AB

A is sodium which belongs to Carbamate group.

B is fluorine which belongs to Halogen group.

Answer 2

Answer:

ok

Explanation: