MCQ
The nucleus of the element $_{21}{E^{45}}$ contains
- A$45$ protons and $ 21$ neutrons
- ✓$21$ protons and $24$ neutrons
- C$21 $ protons and $45 $ neutrons
- D$24 $ protons and $21$ neutrons
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$(I)$ The radius of an anion is larger than that of the parent atom.
$(II)$ The ionization energy generally increases with increasing atomic number in a period.
$(III)$ The electronegativity of an element is the tendency of an isolated atom to attract an electron.
Which of the above statements is/are correct?
Arrange the following in increasing order of their covalent character.
_x000D_ _x000D_$CaF _{2}$,$CaCl _{2}$,$CaBr _{2}$,$CaI _{2}$
_x000D_ _x000D_Choose the correct answer from the options given below.