Advertisements
Advertisements
प्रश्न
State the type of element for the following:
Boron
विकल्प
Metal
Non-metal
Metalloid
Noble gas
Advertisements
उत्तर
Metalloid
APPEARS IN
संबंधित प्रश्न
Write the names of following elements Na, C, Kr, U, Ra, Fe, Co.
Two elements X and Y have valencies of 5 and 3, and 3 and 2, respectively. The elements X and Y are most likely to be respectively :
Fill in the blank:
Dalton used symbol _____ for oxygen and _____ for hydrogen.
Match the metallic elements – with their correct symbols Metallic elements
| Metallic elements | Symbol |
| (a) Potassium | (1) Ca |
| (b) Sodium | (2) Zn |
| (c) Calcium | (3) Pb |
| (d) Magnesium | (4) Hg |
| (e) Zinc | (5) Cu |
| (f) Aluminum | (6) Au |
| (g) Iron | (7) K |
| (h) Lead | (8) Fe |
| (i) Copper | (9) Al |
| (j) Mercury | (10) Na |
| (k) Silver | (11) Mg |
| (l) Platinum | (12) Pt |
| (m) Gold | (13) Ag |
Give the symbol of the following element:
Sulphate
Write the radical of the following valency:
Sodium
Write the radical of the following valency:
Zinc
Write the chemical formula of the following:
calcium sulphide
Write the symbols for the following elements and classify them as solid, liquid and gas. Aluminum, Carbon, Chlorine, Mercury, Hydrogen and Helium
What is the rarest natural element on the earth?
