Advertisements
Advertisements
Question
Name the following:
Metal with valency 2
Advertisements
Solution
Magnesium
APPEARS IN
RELATED QUESTIONS
Define a chemical bond.
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a non-metal.
Five atoms are labelled from A to E.
| Atoms | Mass No. | Atomic No. |
| A | 40 | 20 |
| B | 19 | 9 |
| C | 7 | 3 |
| D | 16 | 8 |
| E | 14 | 7 |
(a) Which one of these atoms:
(i) contains 7 protons,
(ii) has an electronic configuration 2, 7?
(b) Write down the formula of the compound formed between C and D.
(c) predict which are: (i) metals, (ii) non-metals?
Match the atomic number 4, 8, 14, 15 and 19 with each of the following:
(a) A solid non-metal of valelncy 3.
(b) A gas of valency 2.
(c) A metal of valency 1.
(d) A non-metal of valency 4
What type of bond is formed between two atoms, when the electronegative difference between them is low ?
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is
What is the contribution of the following in atomic structure?
Democritus
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of reduction.
The element that would form anion by gaining electrons in a chemical reaction is ______.
Choose the odd one out and write the reason:
