Advertisements
Advertisements
प्रश्न
Write the names of `("NH"_4)_2"SO"_4` compounds:
Advertisements
उत्तर
`("NH"_4)_2"SO"_4` - Ammonium sulphate
APPEARS IN
संबंधित प्रश्न
Why is it not possible to see an atom with naked eyes?
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 |
Define:- Atom
Define:- Radicals
Fill in the blank:
Atoms are _____
Define: Ions
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | ii. Neutral |
| c. Neutron | iii. Positively charged |
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
State true or false. If false, correct the statement.
An atom is electrically neutral.
K: Potassium:: C: ______.
In all atoms of an element
An element is composed of ______ atoms.
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
Atoms of different elements having the same number of ______ are called isotones.
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?
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
Write any two observations which support the fact that atoms are divisible.
Atoms have a radius of the order ______.
