An element ‘X' has atomic number 13: 1. Write its electron configuration. 2. State the group to which ‘X‘belongs? 3. Is ‘X‘ a metal or non-metal? 4. Write the formula of its bromide.

An element ‘X' has atomic number 13: 1. Write its electron config…

Question

An element ‘X' has atomic number 13:

Write its electron configuration.
State the group to which ‘X‘belongs?
Is ‘X‘ a metal or non-metal?
Write the formula of its bromide.

✓

Answer

solution Since the atomic number given $=13$ The Electronic configuration of the element $=2,8,3$
Group number to which the element ' $X$ ' belongs $=10+3=13^{\text {th }}$ group.
Since ' X ' has 3 valence electrons. So, ' X ' is a metal.
The formula for the bromide can be calculated by cross multiplication of the valences which is as follows:

So, formula of its bromide is $XBr_3$.

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