Question

An element X belongs to third period and second group of the modern periodic table. what its electronic configuration . It is a metal or non-metal.why? write the formula of the compound formed when X reacts with an element

Answer 1

Given:

Location of element X in periodic table = Third period and second group

To find:

Electronic configuration = ?

Metallic property = ?

Reaction with element = ?

Solution:

• As per the given condition, the element which is located in the second group and the third period is Magnesium. Thus element X is identified as magnesium
• The electronic configuration of magnesium is $1s^22s^22p^63s^2$.
• As magnesium belongs to group 2, which is called a group of alkaline earth metals, magnesium is a metal.
• When magnesium reacts with chlorine, it leads to the formation of magnesium chloride as shown in the following chemical equation:

$Mg+Cl_2\rightarrow MgCl_2$

Learn more about such concept

An element ‘a' belongs to 3rd period and 17th group of the periodic table.

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An atom of an element has three electron in its M shell:a)writes its electronic configuration and atomic number.b)what is its valency.c)identify the element and also write its nature.

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Answer 2

Answer:

Mg

or Magnesium

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maange = Magnesium