Advertisements
Advertisements
Question
How many times is a proton heavier than an electron?
Advertisements
Solution
We know,
Mass of an electron = 9.1 × 10–31 kg
Mass of a proton = 1.6 × 10−27 kg
Thus, a proton is 1840 times heavier than an electron.
APPEARS IN
RELATED QUESTIONS
MATCH THE COLUMNAS
| 1. Jpham Dalton | a. Neutrons |
| 2. Atom | b. Model of the atom |
| 3. Chadwick | c.The atomic theory of matter |
| 4. Rutherfrod | d. Positively charged |
| 5. Protons | e. Electricity neutral |
| 6. Nuclear fusion | f. Generator of electricity |
| 7.Gamma -rays | g. High penetrating power |
| h.Energy in sun |
Define:- Radicals
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the 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 ?
Find the mass of 2 moles of nitrogen atoms.
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
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.
Define the following term with an example.
Element
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
Define the following term with an example.
Compound
Define the following term with an example.
Metal
Define the following term with an example.
Metalloid
The number of atoms present in a molecule is called its ______.
1 mole of Gold and Silver contain same number of atoms.
Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
- Rutherford’s atomic model
- Thomson’s atomic model
- Bohr’s atomic model
______ is a substance that is made up of three oxygen atoms chemically combined.
