General
✓✗Valency of non-metals is usually equal to -
- Number of valence electrons
- Number of shells in the atom
- 8 minus number of valence electrons
- Atomic number
General
✓✗Electronic configuration of elements represents
- Number of electrons in an atom
- Number of electrons protons and neutrons in an atom
- Arrangement of electrons in various shells of an atom
- None of these
General
✓✗Atomic number is equal to
- Number of neutrons
- Total of protons and neutrons
- Number of electrons
- Number of protons
General
✓✗Number of electrons present in the outermost shell of Neon is
- 2
- 6
- 8
- 4
General
✓✗Which one of the following is not an isotope of Hydrogen?
General
✓✗Mass number of an element is denoted by the letter
- A
- L
- 2
- M
General
✓✗According to Bohr’s model of atom, electrons revolve around nucleus in
- Fixed energy levels
- Shells
- Orbits
- All of these
General
✓✗Atomic number of Argon is 18, the number of valence electrons is
- 2
- 8
- 16
- 4
General
✓✗Energy level ‘N’ can hold maximum of _______electrons
- 18
- 32
- 64
- 8
General
✓✗Radioactive isotopes emit radiations like
-
-
-
- All of these