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प्रश्न
Electron Affinity is maximum in ______.
विकल्प
Mg
Ar
Li
Br
उत्तर
Electron Affinity is maximum in Br.
Explanation:
From left to right in the periodic table, electron affinity generally increases because atoms become more prone or unstable to gaining an electron in order to achieve a stable electronic configuration, such as that of noble gases. Because they need one electron to complete their octet, halogens such as bromine (Br) have an excessively high electron affinity. Metals like magnesium (Mg) and lithium (Li) have lesser propensities to lose electrons than noble gases like argon (Ar), which have entire outer shells.
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संबंधित प्रश्न
Rewrite the following statement after correction, if necessary:
Elements in the same period have equal valency
How does Chemical reactivity of elements change on going from left to right in a period of the periodic table?
Give example in support of your answer.
Which of the following element does not lose an electron easily?
(a) Na
(b) F
(c) Mg
(d) Al
Which of the following set of elements is written correctly in the order of their increasing metallic character?
(a) Mg, Al, Si
(b) C, O, N
(c) Na, Li, K
(d) Be, Mg, Ca
Four elements P, Q, R and S belong to the third period of the Modern Periodic Table and have respectively 1, 3, 5 and 7 electrons in their outermost shells. Write the electronic configurations of Q and R and determine their valences. Write the molecular formula of the compound formed when P and S combine.
Consider the section of the periodic table given below :
| Group numbers |
IA | IIA | IIIA | IVA | VA | VIA | VIIA | O |
| 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 | |
| Li | D | O | J | Ne | ||||
| A | Mg | E | Si | H | K | |||
| B | C | F | G | L |
With reference to the table, answer the following :
(i) Which is the most electro negative ?
(ii) How many valence electrons are present in G ?
(iii) Write the formula of the compound between B and H ?
(iv) In the compound between F and J, what type of bond will be formed ?
(v) Draw the electron dot structure for the compound formed between C and K.
Arrange the following in order of increasing radii:
Mg2+, Mg, Mg+
An element A has 2 electrons in its fourth shell. State:
is it a metal or non-metal
Name or state following with reference to the element of the first three periods of the periodic table.
A non-metal in period 2 having electronic configuration 2, 6.
State the following:
The group which contains highly electropositive metals including sodium.
