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प्रश्न
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
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उत्तर
| Element | At.Numbers |
Electronic Configuration K L M N |
| 1. Oxygen | 8 | 2 6 |
| 2. Fluorine | 9 | 2 7 |
| 3. Sodium | 11 | 2 8 1 |
| 4. Silicon | 14 | 2 8 4 |
| 5.Argon | 18 | 2 8 8 |
APPEARS IN
संबंधित प्रश्न
MATCH THE COLUMNAS
| 1. Jpham Dalton | a. Neutrons |
| 2. Atom | b. Model of the atom |
| 3. Chadwick | c.The atomic theory of matter |
| 4. Rutherfrod | d. Positively charged |
| 5. Protons | e. Electricity neutral |
| 6. Nuclear fusion | f. Generator of electricity |
| 7.Gamma -rays | g. High penetrating power |
| h.Energy in sun |
WRITE SHORT ANSWER
Name three inert gases.
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
Write the names of the elements present in the:-
Glucose
Define: Covalent bond
State Dalton’s atomic theory.
How did Neils Bohr visualise the atom ?
Name the particle or particles you would expect to find in :
The nucleus of an atom
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
Fill in the blank
An excess of electrons produces a ________ charge.
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
Why is it not possible to see an atom even with the most powerful microscope ?
How many times is a proton heavier than an electron?
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
Define the following term with an example.
Element
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
Atoms of one element can be transmuted into atoms of other elements by ______
