Advertisements
Advertisements
प्रश्न
Define the term ‘mass number’ of an atom.
Advertisements
उत्तर
Mass number of an element is equal to the sum of protons and neutrons in the nucleus of the atom.
APPEARS IN
संबंधित प्रश्न
What are the atomic numbers of elements whose outermost electrons is represented by 2p3.
Name the particles which actually determine the mass of an atom.
From the symbol `""_12^24"Mg"`
, state the mass number, the atomic number and electronic configuration of magnesium.
‘Valency is the number of hydrogen atoms which can combine with [or displace] one atom of the element [or radical] forming a compound’. With reference to the above definition of valency, state the valency of chlorine in hydrogen chloride, giving reasons.
Define the term of atomic number.
What is a neutron?
The elementary particles such as protons and neutrons are collectively called ______.
______ = No. of protons = No. of the electrons.
‘Z’ is denoted by ______.
If an atom has 6 electrons in its outermost shell, it is inert.
