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प्रश्न
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^40_20Ca}\]
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उत्तर
Geometric atomic structure of:
A = P + n
40 = 20 + n
∴ n = 40 − 20 = 20 neutrons
e = 20
Electronic arrangement 2, 8, 8, 2
K L M N
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संबंधित प्रश्न
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?
Fill in the blank.
___________ single covalent bonds are formed between the carbon and chlorine atoms.
How many atoms of each kind are present in the following molecule:
Calcium oxide
How many electrons are required or released by each atom in calcium oxide to attain the nearest noble gas configuration?
State the following is a reduction reaction or oxidation reaction.
\[\ce{Fe^2+ - e- -> Fe^3+}\]
Explain fractional atomic mass. What is the fractional mass of chlorine?
Draw orbit structure diagram of sodium chloride (NaCl).
Sodium having atomic number 11, is ready to ______ electron/ electrons to attain the nearest noble gas electronic configuration.
______ theory explains the formation of molecules.
Choose the odd one out and write the reason:
