Advertisements
Advertisements
Question
Fill in the following blanks in respect of an atom of an element
| No. of protons | No. of neutron | Mass number | Atomic number | No. of electrons | Symbol |
| 11 | 12 | ___________ | ___________ | ___________ | ________ |
Solution
| No. of protons | No. of neutron | Mass number | Atomic number | No. of electrons | Symbol |
| 11 | 12 | 23 | 11 | 11 | Na |
APPEARS IN
RELATED QUESTIONS
What are the atomic numbers of elements whose outermost electrons is represented by 3p5?
State the mass number, the atomic number, number of neutrons and electronic configuration of the following atoms.
`""^12""_6C, ""^16""_8O, ""^19""_9F, ""^20""_10Ne, ""_13""Al""^27, ""_17""Cl""^35`
Also, draw atomic diagrams for them.
What is variable valency? Name two elements having variable valency and state their valencies.
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with 6 valence electrons
Name or state the following:
Elements having same mass number but different atomic number
State the main postulates of Dalton’s atomic theory.
What is atomic number?
Give short answer:
what is the atomic mass number? mention its formula.
Match the following:
| Column A | Column B | ||
| 1. | K shell | a. | 8 |
| 2. | L shell | b. | 32 |
| 3. | M shell | c. | 2 |
| 4. | N shell | d. | 18 |
Compare the charge and mass of protons and electrons.
