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प्रश्न
Define the term of atomic number.
What is meant by the term atomic number
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उत्तर
Atomic number [Z]: “Is the number of protons in the nucleus of an atom.”
OR “Is the number of positive charges in the nucleus of its atom.”
OR “Is the number of electrons in the complete atom.”
Z = P = e
संबंधित प्रश्न
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What is its atomic number and mass number?
TRUE \ FALSE
After the emission of a beta-particle, the atomic number of the atom increases by one.
WRITE SHORT ANSWER
Define the atomic mass number of an atom.
Fill in the blanks- The number of protons in the nucleus of an atom is called its ....................
Define the following form:
Atomic number
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with 6 valence electrons
The particles that make up the atom are called ______ particles.
‘A’ is denoted by ______.
If an atom has 6 electrons in its outermost shell, it is inert.
Match the following:
| Column A | Column B | ||
| 1. | Mass of proton | a. | +1 |
| 2. | Mass of electron | b. | -1 |
| 3. | Charge of electron | c. | 9.31 x 10-28g |
| 4. | Charge of proton | d. | 1.67 x 10-24g |
