which halogen reacts spontaneously with Au to produce Au⁺³ ?

1. Cl₂
2. F₂
3. I₂
4. Br₂
Show Answer
Answer: A
Explanation:
• N/A
5 13 Complains

The anhydride of HClO₄ is:

1. Cl₂O₇
2. ClO₂
3. Cl₂O₅
4. ClO₃
Show Answer
Answer: A
Explanation:
• N/A
2 0 Complains

Which is the strongest acid?

1. HClO
2. HClO₂
3. HClO₃
4. HClO₄
Show Answer
Answer: D
Explanation:
• N/A
0 0 Complains

Which of the followings represents the correct electronic configuration of the outermost energy level of an element of zero group in the ground state?

1. s²p⁴
2. s²p⁵
3. s²p⁶
4. s²p³
Show Answer
Answer: C
Explanation:
• N/A
2 0 Complains

Which of the following halogens is used as an insecticide?

1. F₂
2. I₂
3. Br₂
4. Cl₂
Show Answer
Answer: D
Explanation:
• N/A
0 0 Complains

Which of the followings is a non-typical transition element?

1. Zn
2. Mn
3. Cr
4. Fe
Show Answer
Answer: A
Explanation:
• N/A
0 0 Complains

f-block elements are also called-----------------elements.

1. inner transition
2. outer transition
3. normal transition
4. none of these
Show Answer
Answer: A
Explanation:
• N/A
1 0 Complains

The total number of transition elements

1. 50
2. 56
3. 58
4. 14
Show Answer
Answer: C
Explanation:
• N/A
0 0 Complains

Typical oxidation state of 3-d transition elements is

1. 6
2. 4
3. 1
4. 2
Show Answer
Answer: D
Explanation:
• N/A
2 0 Complains

First transition series ends at--------------.

1. Cd
2. Zn
3. Cu
4. Au
Show Answer
Answer: B
Explanation:
• N/A
1 0 Complains