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प्रश्न
Explain
K is more reactive than Li.
उत्तर
K and Li belongs to group 1 i.e., metals and we know that for metals chemical reactivity of elements increases down the group because chemical reactivity increases as electropositive or metallic character increases.
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संबंधित प्रश्न
Name the periodic property which relates to the tendency of an atom to attract the shared pair of electron.
The tendency of an atom to attract electrons itself when combined in a covalent compound.
Among the elements of the second period, Li to Ne, pick out the element with the highest electro negativity
Fill in the blank
Reactivity ______ down the gruop for alkali metals with increase in electropositive character
Select the correct answer
Which of the following element has highest electronegativity?
Arrange the following as per instruction given in the bracket.
Cs, Na, Li, K, Rb (decreasing electronegativity)
Arrange the following as per the instruction given in the bracket
F,Cl,Br (Increasing electronegativity)
The electronegativities (according to Pauling) of the elements in period 3 of the periodic table are as follows with elements arranged in alphabetical order:
| Al | Cl | Mg | Na | P | S | Si |
| 1.5 | 3.0 | 1.2 | 0.9 | 2.1 | 2.5 | 1.8 |
Arrange the elements in the order in which they occur in the periodic table from left to right.
(The group 1 element first, followed by the group 2 element and so on, up to group 7).
Answer the following question using the data given below:
- Assertion: The nature of bond in HF molecule is ionic
- Reason: The electronegativity difference between H and F is 1.9.
State the term for the following:
The tendency of an atom to pull a shared pair of electrons towards itself in a compound.
