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प्रश्न
Give two examples for each of ionic and covalent bond.
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उत्तर
Example of ionic bonds— Sodium chloride and calcium oxide.
Example of covalent bond— Water, carbon dioxide.
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संबंधित प्रश्न
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Define: Covalent bond
Who originated the word ‘atom’ ?
Fill in the blank
If an atom gains an electron, it is called an _______
Fill in the blank
An _______ is electrically neutral.
Fill in the blank
An excess of electrons produces a ________ charge.
What are the building blocks of matter ?
How is the size of an atom indicated ?
State two observations which show that atom is not indivisible.
One nm is equal to :
An atom of element E contains 3 protons, 3 electrons and 4 neutrons :
(a) What is its atomic number?
(b) What is its mass number?
(c) Write the electronic configuration of the element E.
(d) State whether element E is a metal or non-metal. Why?
(e) What type of ion, cation or anion, will be formed by an atom of element E? Why
(f) Write the symbol of the ion formed by an atom of element E.
(g) What could element X be?
Find the mass of 2 moles of nitrogen atoms.
Define the following term:
Atom
In what respects do the three isotopes of hydrogen differ? Give their structures.
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
The basic unit of matter is ______.
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
Atoms of different elements having the same number of ______ are called isotones.
