Halogens
Trending Questions
Q. The diagram below shows the first three periods of the modern periodic table. Three elements have been represented by the letters X1, X2, and X3.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1766373/original_Capture7.PNG)
Arrange these elements in decreasing order of their valency.
Arrange these elements in decreasing order of their valency.
- X3 > X2 > X1
- X3 > X2 > X1
- X1 > X2 > X3
- X1 > X3 > X2
Q. What is the chemical symbol of beryllium?
- B
- Be
- Ba
- Br
Q. An element 'P' has atomic number 56. What will be the formula of its halide?
- PX
- PX2
- PX3
- P2X2
Q.
Among halogens,
Q.
Element with highest electron affinity is
Cl
O
Na
F
Q.
Which of the following is the symbol for Bromine?
- Br
- S
- Ca
- Be
Q. There are ______ elements known to us at present in which ______are naturally occuring and ______have been prepared artificially.
- 120, 88, 25
- 115, 92, 23
- 100, 22, 31
- 111, 99, 11
Q.
Bromine on the periodic table is noted by which symbol?
Br
Ce
Be
S
Q. The elements present in the 17th group of the modern periodic table are also known as ____.
- Chalcogens
- Alkali metals
- Halogens
- Pnicogens
Q.
Which element can be placed in the region marked by question mark ?
Br
Si
Ga
I
Q.
The element with controversial placement in modern periodic table is
Q.
The most non-metallic element in group 17 is:
F
Cl
Br
I
Q. Which of the following is a purple coloured solid halogen?
- Chlorine
- Bromine
- Iodine
- Astatine
Q.
Group 17 elements are -
Metals
Non-metals
Noble elements
Transition elements