Advertisements
Advertisements
प्रश्न
An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.
Advertisements
उत्तर
- Atoms with no electron will have mass, because mass depends on number of Protons and Neutrons though it has no electron.
- Atoms can exist without electrons, Matter is build out of neutrons, protons (+) and electrons (-). Matter becomes stable only if it is electrically neutral.
- So atoms without electrons do exist and must have their own states (charged or uncharged transfered back and forth in their environment)
- Example: He2+. It has 2 protons and 2 neutrons but no electrons.
APPEARS IN
संबंधित प्रश्न
Write the names of the elements present in the:-
Sodium hydroxide
Fill in the blank
An ion with negative charge is called _______
Define: Ions
Give two examples for each of ionic and covalent bond.
Name the particle or particles you would expect to find in :
The nucleus of an atom
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
Does the particle have an excess of electrons or a deficiency of electrons ?
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
How is the size of an atom indicated ?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
What will be the charge present of the molecule XY after chemical combination?
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
Define – Atom.
Name the sub-atomic particles.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the term ions or radicals.
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.
Which of the following has maximum number of atoms?
The graphite refill used is pencil is made of element called ______.
Atoms have a radius of the order ______.
