Q. 384.6( 10 Votes )
A certain particle carries 2.5 × 10–16C of static electric charge. Calculate the number of electrons present in it.
Charge on particle = 2.5 × 10–16C
Charge on electron, = ne
n = number of electrons
e = 1.6× 10-19 J
n = [2.5 × 10–16] / [1.6× 10-19]
n = 1562 electrons
Therefore, the number of electrons present is 1562 electrons.
Rate this question :
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.NCERT - Chemistry Part-I
An ion with mass number 56 contains 3 units of positive charge and 30.4% more neutrons than electrons. Assign the symbol to this ion.NCERT - Chemistry Part-I
An element with mass number 81 contains 31.7% more neutrons as compared to protons. Assign the atomic symbol.NCERT - Chemistry Part-I
Give the number of electrons in the species andNCERT - Chemistry Part-I
In Milikan’s experiment, static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drop is –1.282 × 10–18C, calculate the number of electrons present on it.NCERT - Chemistry Part-I
A certain particle carries 2.5 × 10–16C of static electric charge. Calculate the number of electrons present in it.NCERT - Chemistry Part-I
(i) Calculate the total number of electrons present in one mole of methane.
(ii) Find (a) the total number and (b) the total mass of neutrons in 7 mg of 14C. (Assume that mass of a neutron = 1.675 × 10–27 kg).
(iii) Find (a) the total number and (b) the total mass of protons in 34 mg of NH3 at STP.
(iv) Will the answer change if the temperature and pressure are changed?NCERT - Chemistry Part-I
How many neutrons and protons are there in the following nuclei?
NCERT - Chemistry Part-I
Write the complete symbol for the atom with the given atomic number (Z) and atomic mass (A)
(i) Z = 17, A = 35.
(ii) Z = 92, A = 233.
(iii) Z = 4, A = 9.NCERT - Chemistry Part-I