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The proton numbers in the atoms of some elements, X,Yand Z, are 1, 9,and 20 respectively. (a) State (1) the general name by which elements belonging to the same group in the periodic table with Y are called.
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35 votes
The proton numbers in the atoms of some elements, X,Yand Z, are 1, 9,and 20 respectively. (a) State (1) the general name by which elements belonging to the same group in the periodic table with Y are called.

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User Nobeh
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6 votes
6 votes

Answer:

Halogens

Step-by-step explanation:

Atomic number 9 is the element fluorine. Fluorine is in group 17 of the periodic table. Elements in group 17 of the periodic table are called halogens.

The proton numbers in the atoms of some elements, X,Yand Z, are 1, 9,and 20 respectively-example-1
User Mewahl
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