# How many electrons does lithium 3 have?

## How many electrons does lithium 3 have?

3 electrons
This means that lithium has 3 protons, 3 electrons and 4 neutrons (6.941 – 3 = ~4).

What is the relationship between reactivity and atomic number for metals in the same group?

Radius and Reactivity As atomic number increases, so does an atom’s radius. The outermost electron is held less tightly and escapes more readily. Therefore, the alkali metal with the higher number is more chemically reactive. This makes francium the most reactive of the alkali metals.

### Does lithium have 3 electron shells?

A lithium atom, for example, has three electrons. It has two in the first shell and one in the second shell….Electron shells.

Energy shell Maximum number of electrons
Third 8

What does the 3 represent for lithium on the periodic table?

Lithium is a chemical element in the periodic table that has the symbol Li and atomic number 3….

General
Name, Symbol, Number Lithium, Li, 3
Series Alkali metal
Group, Period, Block 1(IA), 2 , s
Density, Hardness 535 kg/m3, 0.6

## What is the relationship between the atomic number and family?

Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons. The number of protons in a nucleus determines the element’s atomic number on the Periodic Table. For example, carbon has six protons and is atomic number 6.

Does reactivity increase down the group 17?

The chemical reactivity of group 17 elements decreases down the group. So down the group there is an increase in the atomic radius and hence the effective nuclear force decrease as the atomic radius increases and this leads to the decreased chemical reactivity down the group.

### How many energy levels are in lithium?

3

Element Element Number Number of
Energy Levels
Hydrogen 1 1
Helium 2 1
Lithium 3 2

How many electrons does francium have in its shell?

We can see that francium has 87 electrons. Counting down from hydrogen, which is in the n = 1 shell, francium’s outermost electrons are “contained” within the n = 7 shell and the element resides in the ” s -block.” Hydrogen, in the n = 1 shell, has the simple electron configuration of 1s1.

## Is there a comparison between francium and lithium?

You can study the detailed comparison between Francium vs Lithium with most reliable information about their properties, attributes, facts, uses etc.

Are there 87 protons and 136 neutrons in an atom?

So there are 87 protons and 136 neutrons. The 87 electrons are split up between seven energy levels. But they are not split evenly. There are two electrons on the first, eight on the second, 18 on the third, 32 on the fourth, 18 on the fifth, eight on the sixth, and only one on the seventh.

### Where did the element lithium get its name?

The element Lithium was discovered by Johan August Arfwedson in year 1817 in Sweden. Lithium derived its name derived its name from the Greek word lithos, meaning ‘stone’ None. 6Li, 7Li.