Question

the element with the atomic number 3 is likely to have similar chemical properties to the element with the atomic number. a) 5 b) 11 c) 8 d) 20​

Answer 1

Answer:

option (b) is correct.

Explanation:

because element with atomic number 11 is sodium. Lithium and sodium belong to same group. (1A).

we know that elements with similar properties are should be placed in same group.

since lithium and sodium belongs to same group , definitely they will have similar chemical properties.

Note: lithium properties are also similar to Magnesium due to diagonal relationship.

Reasons for diagonal relationship:

(1) similar ionic size.

(2) similar radius ratio.

(3) similar charge .

(4) similar electronegativity.

Answer 2

Answer:(b) 11

Explanation:we know that element with similar properties are should be placed in same group which are sodium(11) and lithium(3)