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प्रश्न
______ is the smallest particle of an element.
उत्तर
Atom is the smallest particle of an element.
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
WRITE SHORT ANSWER
Define an ionic compound.
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
Define:- Radicals
Write the names of `"FeS"` compounds :
Define: Relative atomic mass
Define: Covalent bond
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
Dalton's atomic theory says that atoms are indivisible. Is this statement still valid ? Give reasons for your answer.
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?
In what respects do the three isotopes of hydrogen differ? Give their structures.
Draw the diagrams representing the atomic structures of the following: Neon
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
The basic unit of matter is ______.
Atoms of one element can be transmuted into atoms of other elements by ______
1 mole of Gold and Silver contain same number of atoms.
Which of the following has maximum number of atoms?
A sample of vitamic C is known to contain 2.58 ×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?
