NEW
Font size
WorksheetsLets us Explore Classification of elements
Total questions: 12
Worksheet time: 6mins
What happens to the electropositive character of elements on moving from left to right in a periodic table?
Increases
Decreases
First increases than decreases
First decreases than increases
The electronic configuration of an element M is 2, 8, 4. In modern periodic table, the element M is placed in
4 group
2 group
14 group
18 group
Which of the following is the correct order of the atomic radii of the elements oxygen, fluorine and nitrogen?
O < F < N
N < F < O
O < N < F
F < O < N
What is the other name for group 18th elements?
Noble gases
Alkali metals
Alkaline Earth metals
Halogens
Which of the following is the most reactive element of the group 17?
Oxygen
Fluorine
Magnesium
Nitrogen
Which of the following elements has 2 shells and both are completely filled?
Helium
Neon
Calcium
Boron
Which of the following is the atomic number of an element that forms basic oxide?
18
17
19
15
. Which of the following does not decrease while moving down the group of the periodic table?
Atomic radius
Metallic character
Number of shell in an atom
Valence electrons
An element M is in group 13th of the periodic table, the formula for its oxide is
MO
M2O3
M3O2
None
Who has given the Modern Periodic table?
Mendeleev
Neils Bohr
Newlands
Moseley
Electronic configuration of Al+3 is
2,8,3
2,8,8
2,8
2,5
Identify the group which is not a Dobereiner triad
Li, Na, K
Be, Mg, Cr
Ca, Sr, Ba
Cl, Br, I
