Advertisements
Advertisements
Question
Choose the correct answer from the option given below.
Modern atomic symbols are based on the method proposed by
Options
Bohr
Dalton
Berzelius
Alchemist
Advertisements
Solution
Berzelius
APPEARS IN
RELATED QUESTIONS
An ion with mass number 37 possesses one unit of negative charge. If the ion contains 11.1% more neutrons than the electrons, find the symbol of the ion.
Define atomic mass of an element.
What is meant by Unified Atomic Mass?
What are polyatomic ions? Give two examples.
Define the term:
Mass number
Define the term of mass number.
What would be the reason for an element to have atoms with different mass numbers?
Select the correct answer from the answer in the bracket to complete the sentence.
An atom with electronic configuration 2, 7 and mass number 19 will have ________ neutrons.
Draw the structure of oxygen and sulphur atoms.
Which of the following has the smallest mass?
The average atomic mass of hydrogen is ______ amu.
The gram atomic mass of an element has no unit.
Answer the following question using the data given below:
- Assertion: The Relative Atomic mass of aluminium is 27
- Reason: An atom of aluminium is 27 times heavier than 1/12th of the mass of the C – 12 atom.
Write the different types of isotopes of oxygen and their percentage abundance.
Calculate the % of each element in calcium carbonate. (Atomic mass: C-12, O-16, Ca -40)
Calculate the % of oxygen in Al2(SO4)3. (Atomic mass: Al-27, O-16, S -32)
Calculate the % relative abundance of B-10 and B-11, if its average atomic mass is 10.804 amu.
One electron is present in the outermost shell of the atom of an element X. What would be the nature and value of charge on the ion formed if this electron is removed from the outermost shell?
Chlorine exists in two isotopic forms, \[\ce{Cl-37}\] and \[\ce{Cl-35}\] but its atomic mass is 35.5. This indicates the ratio of \[\ce{Cl-37}\] and \[\ce{Cl-35}\] is approximately
If the atomic mass unit ‘u’ were defined to be `1/5 "th"` of the mass of an atom of C-12, what would be the atomic weight of nitrogen in amu or ‘u’ in this state? Atomic weight of N on the conventional scale is 14.
