Structure of an Atom
Trending Questions
The atomic numbers of Al, Na and Be respectively are:
11, 13 and 4
13, 11 and 6
13, 6 and 11
13, 11 and 4
If Avogadro's number is 6×1023, then the number of protons, neutrons and electrons in 14 g of 6C14 are respectively:
36×1023, 48×1023, 36×1023
36×1023, 36×1023, 36×1021
48×1023, 36×1023, 48×1021
48×1023, 48×1023, 36×1021
If an atom A has mass number 'x' and atomic number 'y' ( yAx ) and it forms an ion by losing an electron. What can we say about the mass number of the ion?
Mass number will be lesser than x
Mass number will be greater than x
Mass number will be equal to x
Mass number varies randomly
Rutherford’s experiment on scattering of α - particles showed for the first time that the atom has
electrons
protons
neutrons
nucleus
Which of the following is the correct representation of electrons, protons and neutrons respectively?
01e, −11p, 10n
0−1e, 11p, 10n
10e, 11p, 11n
10e, 11p, 01n
According to Dalton's atomic theory, matter consists of indivisible particles called atoms.
True
False
Discovery of the nucleus of an atom was due to the experiment carried out by
Mosley
Bohr
Rutherford
Thomson
Atoms achieve stable configuration by ____
Sharing electrons
Losing electrons
Gaining electrons
All of these
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