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प्रश्न
Write the names of the elements present in the:-
Ammonia
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उत्तर
Ammonia : Nitrogen, hydrogen.
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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 |
Write the names of the elements present in the:-
Glucose
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Name three non-metals/radicals which have valency -1, -2, and -3.
Define: An Atom:
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What is the atomic numebr of X ?
Fill in the blank
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An _______ is electrically neutral.
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One nm is equal to :
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- Sodium atom
- Chlorine ion
- Carbon atom
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The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
Name the sub-atomic particles.
Define the following term with an example.
Non-metal
Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
Atoms of different elements having the same number of ______ are called isotones.
______ is a substance that is made up of three oxygen atoms chemically combined.
