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प्रश्न
Select the correct answer to the statement given below:
The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.
विकल्प
Molecule
Orbits
Atom
Valency
Radical
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उत्तर
Molecule
APPEARS IN
संबंधित प्रश्न
ANSWER IN DETAIL
How are isobars different from isotopes ?
Define:- Radicals
Write the names of the elements present in the:-
Sodium hydroxide
Write the names of `"Na"_3"PO"_4` compounds :
Fill in the blank:
Atoms are _____
What does an atom consist of ? Explain.
Name the particle or particles you would expect to find in :
The orbit of an atom
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
Fill in the blank
A deficiency of electrons produces a ________ charge.
What is an atom ? How do atoms usually exist ?
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?
Electron, proton, neutron are the types of ______ in an atom.
Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | ii. Neutral |
| c. Neutron | iii. Positively charged |
Draw the structure of an atom and explain the position of the sub-atomic particles.
Project.
To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.
Define the following term with an example.
Compound
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
Does the solubility of a substance change with temperature? Explain with the help of an example.
