Q.1: The distribution of electrons into different orbits of an atom was suggested by __________ and __________.
a) Bohr, Bury
b) Bohr, Rutherford
c) Bohr, Thomson
Q.2: The maximum number of electrons that can be accommodated in the outermost orbit is ________.
Q.3: The electrons present in the outermost shell of an atom is called __________ electrons.
Q.4: The helium atom has _______ electrons in its outermost shell.
Q.5: Atoms share, gain or lose electrons to achieve an __________ in the outermost shell.
Q.6: The magnesium has two electrons in its outermost orbit, so its valency will be _______.
Q.7: An atom of each element has a definite combining capacity known as _____________.
Q.8: The number of __________ of an atom determines its atomic number.
Q.9: The protons and neutrons are also called _________.
Q.10: The _____________ is defined as the sum of total number of protons and neutrons present in the nucleus of an atom.
a) Atomic Mass
b) Atomic Number