What does a group number and period number signify?

What does a group number and period number signify?

Answer: Explanation: Groups and periods are two ways of categorizing elements in the periodic table. Periods are horizontal rows (across) the periodic table, while groups are vertical columns (down) the table. Atomic number increases as you move down a group or across a period.

What is Group 3 on the periodic table called?

Groups 3–12 are in the middle of the periodic table and are the transition elements, listed as B in older tables. The two rows of 14 elements at the bottom of the periodic table are the lanthanides and the actinides, whose positions in the periodic table are indicated in group 3.

What does K and KR elements have in common?

Potassium (K) and Krypton (Kr) are in the same group, so they have the same number of valence electrons. Potassium (K) and Krypton (Kr) are in the same group, so they have the same number of valence electrons. Potassium is more reactive, because it has less electron shells than Krypton.

What does be Mg have in common?

What does Be, Mg and Ca have in common? Be, Mg and Ca are alkaline earth metals which are occupied the group-2 of the periodic table. They have the same outermost electron configuration i.e.ns2 and their valency is 2,charge is 2+ and oxidation is +2.

What do the orange and yellow spheres represent in this model of an atomic nucleus?

The orange and yellow spheres represents Protons and neutrons in this model of an atomic nucleus. Protons and neutrons are heavier than electrons and reside in the nucleus at the center of the atom. Electrons are extremely lightweight and exist in a cloud orbiting the nucleus.

What do the orange and yellow spheres represent in this model of an atomic nucleus quizlet?

It refers to substances that do not react with other substances. What do the orange and yellow spheres represent in this model of an atomic nucleus? Protons and Neutrons. They contain at least one proton.

Do atoms contain at least one proton?

The proton is located in the center (or nucleus) of an atom, each atom has at least one proton.