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Question
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
Ca2+ NO31-
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Solution
Ca2+ NO31-
Steps
Formula = Ca(NO3)2
RELATED QUESTIONS
Define: Elements-
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Oxide
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:
Calcium
Give the symbol of the following element:
Phosphorus
State the type of element for the following:
Arsenic
Write the radical of the following valency:
Sodium
Give the formula of the following gas:
Ammonia
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Copper
write symbol with the variable valency
What does the symbol '(l)' present in a chemical equation, mean?
