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
Why is it not possible to see an atom with naked eyes?
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Define:- Atom
Write the names of the elements present in the:-
Glucose
Define: Mass number
One nm is equal to :
An atom of element E contains 3 protons, 3 electrons and 4 neutrons :
(a) What is its atomic number?
(b) What is its mass number?
(c) Write the electronic configuration of the element E.
(d) State whether element E is a metal or non-metal. Why?
(e) What type of ion, cation or anion, will be formed by an atom of element E? Why
(f) Write the symbol of the ion formed by an atom of element E.
(g) What could element X be?
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
What is the contribution of the following in atomic structure?
Maharshi Kanada
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Name the gas that.
Turns moist starch iodide paper blue black.
Draw the diagrams representing the atomic structures of the following: Neon
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
The basic unit of matter is ______.
The smaller particles found in the atom is called ______.
In all atoms of an element
1 mole of Gold and Silver contain same number of atoms.
Which of the following has maximum number of atoms?
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
The first scientific theory about atoms was given by J J. Thomson.
