Four statements are given below (I) Boron is typical non metal (II) Al is a metal but shows many chemical similarities to boron and gallium (III) Formula of kernite is Na 2 B 4 O 7 ⋅ 4 H 2 O (

Question

Four statements are given below

(I) Boron is typical non metal

(II) Al is a metal but shows many chemical similarities to boron and gallium

(III) Formula of kernite is $Na_{2} B_{4} O_{7} \cdot 4 H_{2} O$

(IV) Al is most abundant metal in the earth's crust

(V) In and Tl are almost exclusively metallic in character

The CORRECT statements are :

TestHub · Accepted Answer

All statements (I), (II), (III), (IV), and (V) are correct. Boron is a non-metal. Aluminum is metallic but shares similarities with B and Ga. Kernite's formula is Na 2 ​ B 4 ​ O 7 ​ ⋅ 4 H 2 ​ O . Aluminum is the most abundant metal in Earth's crust. Indium and Thallium are predominantly metallic.

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