Advertisements
Advertisements
प्रश्न
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
If an isotope of ‘H’ has mass no. = 2, how many electrons does it have.
Advertisements
उत्तर
One electron.
APPEARS IN
संबंधित प्रश्न
Explain the Atomic number with example.
What are the atomic numbers of elements whose outermost electrons is represented by 2p3.
Fill in the blank
An ion which has a positive charge is called a ..................
Multiple Choice Questions
The sum of number of protons and number of neutrons present in the nucleus of an atom is called its
Fill in the blank of the following statement :
All the mass of an atom is concentrated in a small region of space called the ___________.
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What are its atomic number and mass number?
An atom of an element has two electrons in the M shell.
What is the (a) atomic number (b) number of protons in this element?
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element which can form trivalent ion
Mass No. 27 is for the element ______.
State the term for the following:
The amount of substance which contains the same number of units as the number of atoms in carbon-12.
