What is the number of valence electrons in a helium atom?

Chemistry

2 answers:

ratelena [41]4 years ago

8 0

<span>Helium has two valence electrons.</span>

Alik [6]4 years ago

5 0

Valency, the combining capacity of an element, is equal to the number of electrons needed, or required to be removed from the outermost shell of the atom of that element, to have a complete 'octet'. The helium atom has only the 1s orbital in its only shell, and it is completely filled with 2 electrons. Its electronic configuration is 1s2.<span>Therefore, helium and the other inert gases with complete octets normally do not take part in chemical reactions. They are considered as zero-valent elements.</span>

You might be interested in

What are the chemical processes used to make chloroquine?

4vir4ik [10]

You spell Chlorine wrong but the process is called electrolysis

6 0

3 years ago

Volume of HCl used 25.0mL 4 l

borishaifa [10]

Answer:

1.0 M

Explanation:

Reaction equation;

KOH(aq) + HCl(aq) -----> KCl(aq) + H2O(l)

Concentration of acid CA = ?

Concentration of base CB = 1.0 M

Volume of base VB = 25.60 - 0.50 = 25.1 ml

Volume of acid VB = 25.0 ml

Number of moles of acid NA = 1

Number of moles of base NB =2

CAVA/CBVB =NA/NB

CAVANB = CBVBNA

CA = CBVBNA/VANB

CA = 1 * 25.1 * 1/25.0 *1

CA = 1.0 M

8 0

3 years ago

Why do different materials/objects have different reactions to fire?

True [87]

Answer:

Different compounds react with oxygen differently – some contain lots of heat energy while others produce a smaller amount. The reaction with the oxygen may happen very quickly or more slowly. Amount: The amount of fuel available to burn is known as the fuel load.

Explanation:

5 0

3 years ago

Read 2 more answers

if you could take 1 step every second and one step is equal to 3 feel how many miles could you walk in a year of 365 days if you

skad [1K]

If you never stopped you could walk 17918.2 miles

6 0

3 years ago

Which of the following is not a characteristic of metals? A. good conductors B. ductile and malleable C. incompressible D. cryst

Maru [420]

A. good conductors is not a characteristic of metals out of all the other followings.