| 1 |
Which one is an incomplete period |
4th
5th
6th
7th
|
| 2 |
Which of the following are alkaline earth metals? |
Be, Mg, Ca
Li, Na, K
Fe, CO, Ni
B, Al, Ga
|
| 3 |
In modern periodic table VI period contains elements |
8
18
10
32
|
| 4 |
Elements of Groups IIA are called |
Alkali metals
Alkaline earth metals
Coinage metals
Halogens
|
| 5 |
The basis of modern periodic table is |
Electron affinity
Atomic mass
Ionization Potential
Atomic number
|
| 6 |
The concept of atomic number was introduced by |
Alrazi
Mendeleeve
Moseley
Dobereiner
|
| 7 |
Who gave the law of Triads in 1829? |
Dobereiner
Mosely
Newland
Mendeleev
|
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