Advertisements
Advertisements
प्रश्न
How do atoms attain noble gas configuration?
उत्तर
Atoms lose, gain or share electrons to attain noble gas configuration.
APPEARS IN
संबंधित प्रश्न
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a non-metal.
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Sodium chloride is ______ compound while hydrogen chloride is ______ compound.
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is
How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
How many electrons are required by each atom mentioned in (a) to attain the nearest noble gas configuration?
What do you think would be the observation of `alpha` particle scattering experiment if carried out on (i) heavy nucleus like platinum (ii) light nuclei like litheum.
Five atoms are labelled V to Z
| Atoms | Mass Number | Atomic Number |
| V | 40 | 20 |
| W | 19 | 9 |
| X | 7 | 3 |
| Y | 16 | 8 |
| Z | 14 | 7 |
- Which one of these atoms
(1) contains 7 protons;
(2) has an electronic configuration 2, 7? - Write down the formula of the compound formed by atoms X and Y.
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^39_19K}\]
Elements with stable electronic configurations have eight electrons in their valence shell. They are ______.
The element that would form cation due to the loss of electrons during the chemical reaction is ______.
Match the following:
| 1. | Atomic bond | a. | Oxygen and hydrogen |
| 2. | Atoms with different electronegativities | b. | acceptor bond |
| 3. | An atom that accepts electron pair | c. | covalent bond |
| 4. | Rusting of iron | d. | donor atom |
| 5. | An atom that provides electron pair | e. | oxidation |
| f. | ionic bond |
