An atom is 16 times heavier than `1//12^th` of mass of a carbon atom (C-12 isotope). What is its mass in amu?

An atom is 10 times heavier than 1/(12^(th)) of mass of the carbon atom. The atomic mass is :

What is atomic mass unit (amu)?

What is atomic mass unit (amu) ?

In each of the following question, an Assertion (A) is following by a corresponding Reason (R ). Use the following keys to choose the appropriate answer. Assertion : Average atomic mass of an element depends upon the atomic masses of different isotopes and their fractional abundances. Reason : Average atomic mass is obtained by multiplying the atomic mass of the heavier isotope with its fractional abundances.

In the atom of an element 7 electrons are present in the M shell. : There are 18 neutrons in the nucleus of atom: a)Write down the electronic configuration of the given atom. b) What is its.mass number? c). How many electrons are present in it.

Give reason for the following. a) atoms are electrically, neutral. b) Most of the mass of an atom is concentrated in its nucleus.