What do elements in the same group have the same atomic mass?

What do elements in the same group have the same atomic mass?

The answer is e. number of valence electrons. The elements in the same group in the periodic table will have the same number of valence electrons….

Do elements in the same group have the same atomic number?

The periodic table also has a special name for its vertical columns. Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. For example, nitrogen (N) has the atomic number seven.

What do all elements in the same group have?

The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.

Is atomic mass same for elements?

The atomic mass ” is simply the total number of nuclear particles (protons + neutrons). Mostly it is different in different atoms but it is same in few cases, elements which have different atomic number but have same atomic mass are known as isobars.

Do elements in the same group have the same number of neutrons?

All atoms of the same element have the same number of protons, but some may have different numbers of neutrons. For example, all carbon atoms have six protons, and most have six neutrons as well. Atoms of the same element that differ in their numbers of neutrons are called isotopes. Many isotopes occur naturally.

Is atomic mass and mass no same?

Key Takeaways: Atomic Mass Versus Mass Number The mass number is the sum of the number of protons and neutrons in an atom. The atomic mass is the average number of protons and neutrons for all natural isotopes of an element.

Why are all the elements in the same group similar?

The elements in the same group has similar number of valence electrons. They have identical number of electrons in their outermost shell. e.g. All the alkali metals in Group 1 have 1 valence electron, so they all tend to react the same way with other substances.

How are elements in the same group the same?

The elements in any one vertical column are in the same group. The groups are numbered from left to right. Elements in the same group have similar chemical properties. The number of electrons in the outer shell of all the elements in a group is the same as the group number.

Why are all the elements on the periodic table the same?

Modern periodic table is compiled on the basis of atomic number of element. Hence, elements of each group or family have same number of electrons in their outermost or valence shell. Was this answer helpful?

Is the number of electrons in a group the same as the group number?

The number of electrons in the outer shell of all the elements in a group is the same as the group number.

Why do all elements have the same reactivity?

They have the most in common between the two directions. They share the same number of electrons in their valence subshells. As a result, they will all have the same chemical reactivity. For example, all elements in group 1 have a single electron in the valence shells, so they easily give up that electron to become +1 cations.