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प्रश्न
An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a divalent halide.
- Where in the periodic table are elements X and Y placed?
- Classify X and Y as metal (s), non-metal (s) or metalloid (s)
- What will be the nature of oxide of element Y? Identify the nature of bonding in the compound formed
- Draw the electron dot structure of the divalent halide
उत्तर
- Element X is chlorine, it is placed at 17th group and 3rd period in the periodic table. Element Y is calcium, it is placed at the 2nd group and 4th period in the periodic table.
- Element X is a non-metal and element Y is a metal.
- Element Y is metal and thus, the oxide of this metal will be basic in nature. The chemical formula for calcium oxide is CaO and the bonding in the compound is ionic in nature.
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संबंधित प्रश्न
Why is the size of neon greater than fluorine?
Size of atom progressively becomes smaller when we move from sodium (Na) to chlorine (CI) in the third period of the periodic table?
Write the name and symbol of the element from the description.
The noble gas with the smallest atomic radius.
Select the correct answer
Atomic radii of fluorine and neon in angstrom unit are
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Atomic size increases from left to right across a period.
Arrange the following as per the instruction given in the bracket.
Mg, Cl, Na, S, Si (increasing order of atomic size)
The size of an atom is indicated by its _______.
The size of an atom depends on the number of valence electrons.
Some elements and their atomic radii are given here. Arrange them in decreasing order of their atomic radii. Identify which of the above elements is the biggest atom and which is smallest?
| Element | K | Na | Rb | Cs | Li |
| Atomic radius (pm) | 231 | 186 | 244 | 262 | 151 |
Which of the following gives the correct increasing order of the atomic radii of O, F and N?
