Chemistry
Name the (i) metals (ii) metalloids and (iii) non-metals in the first twenty elements.
Answer
- Metals — Lithium (Li), Beryllium (Be), Sodium (Na), Magnesium (Mg), Aluminium (Al), Potassium (K), Calcium (Ca).
- Metalloids — Boron (B), Silicon (Si).
- Non-Metals — Hydrogen (H), Helium (He), Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), Neon (Ne), Phosphorus (P), Sulphur (S), Chlorine (Cl), Argon (Ar).
Related Questions
What do you understand by ?
(i) Periodicity
(ii) Typical elements
(iii) Orbits
Name two elements that you would expect to show chemical reactions similar to calcium. What is the basis of your choice ?
Fluorine, Chlorine and Bromine are put in one group on the basis of their similar properties.
(i) What are those similar properties ?
(ii) What is the common name of this group or family ?
What is the main characteristic of the last element in each period of the Periodic Table? What is the general name of such elements?