Elements that are found in the same group have the same number of

PHYSICAL SCIENCES

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	protons and neutrons
B	valence electrons
C	neutrons
D	protons

Explanation:

Detailed explanation-1: -The electronic configuration of the outermost shell is same for all the elements belonging to the same group. So, the number of valence electrons for all the elements in a group is the same. Therefore, elements belonging to the same group have the same valency.

Detailed explanation-2: -All elements in a group have the same number of valence electrons equal to the first digit of their group number.

Detailed explanation-3: -Elements in same group show same valency because they have same number of electrons in the outermost shell i.e. Valence shell. Since valency depends upon the valence electrons so they have same valency.

Detailed explanation-4: -Valency of an element determines its chemical reactivity. Therefore, for all elements belonging to a particular group in the periodic table, the number of electrons in the outermost shell, that is the valence electrons will be the same.

Detailed explanation-5: -Answer and Explanation: Elements that are in the same column, or group of the periodic table, have the same number of valence electrons.

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