Advertisements
Advertisements
प्रश्न
Name three non-metals/radicals which have valency -1, -2, and -3.
Advertisements
उत्तर
-1 = Chlorine, Bromine, Iodine.
-2 = Oxide, Sulphide, Sulphate.
-3 = Nitrogen, Nitride Phosphate.
APPEARS IN
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
Write the names of the elements present in the:-
Sodium hydroxide
Define: Mass number
What is the maximum number of electrons present in:
1. first shell
2. second shell
3. third shell and
4. fourth shell
What does the word ‘atom’ mean?
Fill in the blank
An _______ is electrically neutral.
Which of the following statement is correct about the atom of an element ?
Draw diagrams representing the atomic structures of the following:
- Sodium atom
- Chlorine ion
- Carbon atom
- Oxygen ion
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus
The smallest particle of matter that can exist by itself is ______.
A compound containing one atom of carbon and two atoms of oxygen is ______.
K: Potassium:: C: ______.
Name the sub-atomic particles.
Define the term ions or radicals.
1 mole of Gold and Silver contain same number of atoms.
______ is a substance that is made up of three oxygen atoms chemically combined.
What is the fundamental particle of an element?
