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प्रश्न
Elements A, B and C have atomic number 17, 19 and 10 respectively.
Write down the formula of the compound formed by two of the above elements.
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उत्तर
A combines with B to form compound BA
संबंधित प्रश्न
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Sodium chloride is ______ compound while hydrogen chloride is ______ compound.
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
State one observation which shows that atom is not indivisible.
Five atoms are labeled 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 electronic configuration 2,7
(b) Write down the formula in the compound formed between C and D
(c) Predict : (i) metals (ii) non-metals
Give reason
Argon does not react.
Explain
Duplet rule for the formation of hydrogen
State the type of bonding in the following molecules.
Water,
Identify the following reaction as either oxidation or reduction:
Zn → Zn2+ + 2e-
Write the basic concept of Kossel – Lewis theory.
