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प्रश्न
Name the type of elements which have two electrons in the outermost orbit.
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उत्तर
Alkaline Earth metals
संबंधित प्रश्न
Fill in the following blank with suitable word:
Group 18 elements are called ...............
The three elements having chemical symbols of Si, B and Ge are:
(a) all metals
(b) all non-metals
(c) all metalloids
(d) Si is metalloid, B is metal and Ge is non-metal
State whether the following statement is true or false:
On going down in a group of the periodic table, the number of valence electrons increases.
How will the tendency to gain electrons change as we go from left to right across a period? Why?
Two elements P and Q belong to the same period of the modern periodic table and are in group 1 and group 2, respectively. Compare the following characteristics in the tabular form.
- Number of electrons in their atoms
- Their tendency to lose electrons
- Their metallic characters
- Formation of their oxides
- Formulae of their chlorides
What are the periods in a periodic table?
Which of the following is the outermost shell for elements of period 2?
A part of modern periodic table is given below. On its basis, answer the following questions:
| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
Which of the element is a Metalloid?
An element belonging to 3d series of modern periodic table has spin magnetic moment = 5.92 B.M. in +3 oxidation state. The atomic number of elements are ______.
Name the metalloids in the first twenty elements.
