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प्रश्न
Atomic number : ______ :: Mass number : Number of protons and neutrons.
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उत्तर
Atomic number: Number of protons:: Mass number: Number of protons and neutrons.
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संबंधित प्रश्न
What are the atomic numbers of elements whose outermost electrons is represented by 3s1.
State the mass number, the atomic number, number of neutrons and electronic configuration of the following atoms.
`""^12""_6C, ""^16""_8O, ""^19""_9F, ""^20""_10Ne, ""_13""Al""^27, ""_17""Cl""^35`
Also, draw atomic diagrams for them.
The atomic number and the mass number of sodium are 11 and 23 respectively. What information is conveyed by this statement.
FILL IN THE BLANK
Rutherford won the Nobel Prize in 1908 for his investigations in the field of ......................
Elements X, Y and Z have atomic numbers 6,9 and 12 respectively. Which one:
- Forms an anion
- Forms a cation
Define the term ‘mass number’ of an atom.
An element ‘A’ has mass number 23 and atomic number 11. State the –
- no. of neutrons in its shell,
- electronic configuration of the element ‘A’.
The atomic number of an element is 9, it has 10 neutrons. Find the element from the periodic table. What will be its mass number?
In which one of the following, the number of protons is greater than the number of neutrons but number of protons is less than the number of electrons?
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).
Boron, Aluminium, Gallium, Indium, Thallium
Answer the following question in relation to the above group of elements:
The atomic number of boron is 5. Write the chemical formula of the compound formed when boron reacts with chlorine.
