WorksheetsAttempts of Elements Classification
Total questions: 10
Worksheet time: 5mins
The chemical properties of calcium
(20 Ca) are similar to those of .......................
19K
12Mg
25Mn
3Li
The element (12X) is located in ................. in the periodic table.
period (2) and group (2A)
period (2) and group (3A)
period (3) and group (2A)
period (3) and group (4A)
The atomic number of an element that exists in group (7A) and period (2) is .........................
12
7
9
17
The element whose atomic number (18) is .........................
transition element
inert gas
metallic element
halogen element
In the periodic table, the elements which are similar in their properties and located in the same ................
period
group
nucleus
energy level
The number of negative electrons in the atom in its normal state equals .............
the number of protons.
the number of neutrons.
twice the number of protons.
half the number of neutrons.
Elements of d-block are arranged in ..................... groups.
2
5
6
10
The block which contains the group (1A) and (2A) in the periodic table is ......... block.
s
p
d
f
The transition elements start to appear from the beginning of the ................. period.
second
third
forth
fifth
The scientist, who discovered that the nucleus of atom contains positively charged protons is .............
Bohr
Mendeleev
Rutherford
Moseley
