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प्रश्न
Write the names of `"Ca"("NO"_3)_2` compounds :
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उत्तर
`"Ca"("NO"_3)_2` - Calcium Nitrate
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संबंधित प्रश्न
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
Write the names of the elements present in the:-
Ammonia
Define: Ions
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | ii. Neutral |
| c. Neutron | iii. Positively charged |
Draw the electron dot structure of this compound.
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
The smaller particles found in the atom is called ______.
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
State true or false. If false, correct the statement.
An atom is electrically neutral.
______ is the smallest particle of an element.
In the nucleus of `""_20"Ca"^40`, there are ______
Give the salient features of “Modern atomic theory”.
Which of the following has maximum number of atoms?
The graphite refill used is pencil is made of element called ______.
The first scientific theory about atoms was given by J J. Thomson.
