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प्रश्न
Write the names of the elements present in the:-
Acetic acid
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उत्तर
Acetic acid : Carbon, hydrogen, oxygen.
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संबंधित प्रश्न
Tick the most appropriate answer.
Who discovered that radioactive rays are given out by uranium?
- Henri Becquerel
- Marie Curie
- Pierre Curie
- Schmidt
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Write the names of `"Ca"("NO"_3)_2` compounds :
Fill in the blank
An ion with negative charge is called _______
Define: Relative atomic mass
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
Fill in the blank
A deficiency of electrons produces a ________ charge.
What value has been given to the mass of this reference atom ?
Draw diagrams representing the atomic structures of the following:
- Sodium atom
- Chlorine ion
- Carbon atom
- Oxygen ion
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the following term with an example.
Metal
Atoms of one element can be transmuted into atoms of other elements by ______
A change in the physical state can be brought about
Write any two observations which support the fact that atoms are divisible.
The graphite refill used is pencil is made of element called ______.
The ______ are combination of atoms of various elements or the same element.
