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प्रश्न
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
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उत्तर
If an atom loses an electron, it acquires positive a charge
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संबंधित प्रश्न
MATCH THE COLUMNAS
| 1. Jpham Dalton | a. Neutrons |
| 2. Atom | b. Model of the atom |
| 3. Chadwick | c.The atomic theory of matter |
| 4. Rutherfrod | d. Positively charged |
| 5. Protons | e. Electricity neutral |
| 6. Nuclear fusion | f. Generator of electricity |
| 7.Gamma -rays | g. High penetrating power |
| h.Energy in sun |
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
Write the names of the elements present in the:-
Ammonia
Write the names of the elements present in the :-
Sulphuric acid
Fill in the blank
An ion with positive charge is called ______
Name the particles which revolve around the nucleus.
State Dalton’s atomic theory.
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
Dalton's atomic theory says that atoms are indivisible. Is this statement still valid ? Give reasons for your answer.
The electron shell ______ is nearest to the nucleus.
Name the gas that.
Turns moist starch iodide paper blue black.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
K: Potassium:: C: ______.
Define the following term with an example.
Non-metal
An element is composed of ______ atoms.
The number of atoms present in a molecule is called its ______.
Write any two observations which support the fact that atoms are divisible.
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
