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
The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes `""_8^16X" and """_8^18X` in the sample?
Write the names of the elements present in the:-
Ammonia
Write the names of the elements present in the:-
Glucose
Write the names of `"Ca"("NO"_3)_2` compounds :
State Dalton’s atomic theory.
Name the particle or particles you would expect to find in :
The nucleus of an atom
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
What is an atom ? How do atoms usually exist ?
Which of the following statement is correct about the atom of an element ?
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
The smallest particle of matter that can exist by itself is ______.
The volume occupied by 4.4 g of CO2 at S.T.P ______
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges.
Statement II: Atoms of each element are stable and emit their characteristic spectrum.
In the light of the above statements, choose the most appropriate answer from the options given below:
