Question

3. An element has its electron configuration as 2,8,2. Now answer the following questions.

a. What is the atomic number of this element?
b. What is the group of this element?
c. To which period does this element belong?
d. With which of the following elements would this element resemble?

(Atomic numbers are given in the brackets) N (7), Be (4) , Ar (18), Cl (17)

Answer 1

a. What is the atomic number of this element?
1) The atomic number of this element is 12

b. What is the group of this element?

2) This element belongs to second group .

c. To which period does this element belong? 

3) This element belongs to Third period .

d. With which of the following elements would this element resemble? --{resemble meaning (similar मेल खाना) }

4) This element will resemble with Be (4)  because they both belong to same group 

Comments

Very important question