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What do all the elements in one row of the periodic table have in common?

A. They all have similar chemical reactions.
B. They all have the same number of core electrons
C. They all have the same number of valence electrons.
D. They all share the same physical properties.

Respuesta :

azureshades666

Answer:

B

Explanation:

This is because the periodic table is designed this way.

The elements in one row of the periodic table have the same number of core electrons.

  • The electrons present in the valence shell or in the outermost shell are termed valence electrons.
  • Valence electrons participate in chemical bonding.
  • In the periodic table, the elements in the same group have the same number of valence electrons.

For example, sodium, potassium, lithium of group-1 has one valence electron in their respective valence shell.

  • The electrons in the inner shell of an atom are core electrons.
  • Core electrons do not participate in a chemical reaction but are responsible for the reactivity of an atom.
  • In the periodic table, the elements in the same period or row have the same number of core electrons.

For example, lithium, boron, carbon of period-2 has 2 core electrons in their respective inner shells.

So, from this, we can conclude that all the elements in one row of the periodic table have the same number of core electrons.

Learn more about valence and core electrons here:

brainly.com/question/11114869?referrer=searchResults

brainly.com/question/1255778?referrer=searchResults

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