Advertisements
Advertisements
प्रश्न
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
उत्तर
(a) The symbol of an electron is e–.
(b) The symbol of a proton is p+.
(c) The symbol of a neutron is n.
APPEARS IN
संबंधित प्रश्न
Write the names of the elements present in the:-
Glucose
Write the names of `"FeS"` compounds :
Fill in the blank
An ion with negative charge is called _______
Give the charge and the mass of an electron, proton and neutron present in 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
A deficiency of electrons produces a ________ charge.
How is the size of an atom indicated ?
Why is it not possible to see an atom even with the most powerful microscope ?
State two observations which show that atom is not indivisible.
One nm is equal to :
An atom of an element X may be written as `""_9^4"X"`
(a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.
Which of the following statement is correct about the atom of an element ?
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Name the gas that.
Turns moist starch iodide paper blue black.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus
Define the following term with an example.
Metal
Define the following term with an example.
Non-metal
A change in the physical state can be brought about
Lead is also known as plumbum.
