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प्रश्न
Name an element which does not contain neutron.
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उत्तर
Hydrogen does not contain any neutron.
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संबंधित प्रश्न
(i) How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
(ii) How many electrons are required for their octet structure?
What type of bond is formed between two atoms, when the electronegative difference between them is High ?
State the following is a reduction reaction or oxidation reaction.
\[\ce{A^3+ + e- -> A^2+}\]
What is the contribution of the following in atomic structure?
Democritus
How does the Modern atomic theory contradict and correlate with Dalton's atomic theory?
Name the following:
Two atoms having the same number of protons and electrons but different number of neutrons.
Complete the following table relating to the atomic structure of some elements.
|
Element Symbol |
Atomic Number |
Mass Number |
Numbers of neutrons |
Number of Electrons |
Number of Protons |
|
Li |
3 |
6 |
|
|
|
|
Cl |
17 |
|
20 |
|
|
|
Na |
|
|
12 |
|
11 |
|
Al |
|
27 |
|
|
13 |
|
S |
|
32 |
16 |
|
|
Element M forms a chloride with the formula MCl2 which is solid with a high melting point. What type of bond is in MCl2. Write the formula of the compound when M combines with sulphur, oxygen, and nitrogen.
Draw the geometric atomic structure of the three isotopes of hydrogen and the two isotopes of chlorine.
______ is the only noble gas that does not have eight electrons in its valence shell.
