How many valence electrons are present in this atom?

ionization energy

i 496

ii 4562

iii 6912

iv 9544

v 13353

one
two
three
four

This atom has 1 valence electron

Explanation:

Step 1: Data given

The ionization energy for the following element is:

I 496

II 4562

III 6912

IV 9544

V 13353

The element that has this ionization energy is sodium (Na)

Sodium has 11 electrons:

2 electrons on the first shell

8 electrons on the second shell

1 electron on the outer shell = 1 valence electron

This atom has 1 valence electron

the product of the pressure and volume is also constant

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements