Advertisements
Advertisements
प्रश्न
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
Advertisements
उत्तर
What is the atomic mass of the atom= 27
APPEARS IN
संबंधित प्रश्न
WRITE SHORT ANSWER
Define an ionic compound.
Write the names of the elements present in the :-
Sulphuric acid
Write the names of `"Na"_3"PO"_4` compounds :
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
Name the particle or particles you would expect to find in :
The nucleus of an atom
Fill in the blank
A charged particle is called an _____
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
What are the building blocks of matter ?
What is an atom ? How do atoms usually exist ?
Deduce from the datum provided.
| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
In what respects do the three isotopes of hydrogen differ? Give their structures.
Name the gas that.
Turns moist starch iodide paper blue black.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –
- ammonium
- bisulphate
- carbonate
state the group of atoms present in each radical.
The smallest particle of matter that can exist by itself is ______.
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
1 mole of Gold and Silver contain same number of atoms.
Write any two observations which support the fact that atoms are divisible.
The graphite refill used is pencil is made of element called ______.
