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Electronic Configuration

If the electr...

Question

If the electronic configuration of boron is 2, 3 then how many electrons are there in outermost shell of gallium?

A

3

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B

1

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C

2

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D

4

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Solution

The correct option is A 3
.

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Q. A group of elements in the periodic table is given below (Boron is the first member of the group and thallium is the last.)
Boron
Aluminium
Gallium
Indium
Thallium
Answer the following questions in relation to the above group of elements:
(a) Which element has the most metallic character?
(b) Which element would be expected to have the highest electronegativity?
(c) If the electronic configuration of aluminium is 2, 8, 3, how many electrons will be there in the outermost shell of thallium?
(d) The atomic number of boron is 5. Write the chemical formula of the compound formed when boron reacts with chlorine.
(e) Will the elements in the group to the right of this boron group be more metallic or less metallic in character? Justify your answer.

Q. Why can there be only 8 electrons in the outermost shell of an element's electronic configuration.

How many electrons are present in the outermost shell of metals?

Q. How many electrons are present in the M shell of argon which is its outermost shell.?

How many electrons are present in the outermost shell of non-metals?

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