Advertisements
Advertisements
Question
Give scientific reason.
Atomic mass number is a whole number.
Advertisements
Solution
Atomic mass number is a whole number because it is the sum of numbers of protons and numbers of neutrons present in an atom. Which is present in the form of integers.
RELATED QUESTIONS
What is the maximum number of electrons which can be accommodated in the L shell of an atom?
Name the shell of an atom which can accommodate a maximum of :
(a) 2 electrons ?
(b) 18 electrons ?
Draw a neat labelled diagram.
Diagramatic sketch of electronic configurations of magnesium (Atomic number 12)
Mention the basic tendency of an atom which makes it combine with other atoms
Explain the arrangement and distribution of electrons in the various shells with reference to an atom in general and to an atom of potassium ‘3919K’ with special reference to the 2n2 rule.
The following element is given \[\ce{_9W}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
Give a reason for the following:
Helium is chemical extremely unreactive.
Name an element which has the same number of electrons in its first and second shell.
Write down the electron distribution of chlorine atom. How many electrons are there in the L shell? (Atomic number of chlorine is 17).
The electronic configuration of silicon is ——— and that of sulphur is ———.
