Atoms and Ions-AH

How many electrons can the first electron shell hold?

• 1
• 2
• 8
• 0

The electron configuration of sulfur is

• 2. 8. 6

• 2. 8. 8

• 3. 8. 6

• 0. 2. 8

How many protons does Magnesium have?

• 24

• 12

• 2

• 16

If both protons and neutrons are found in the nucleus, why is it positive?

• The reason it is positive is because neutrons have a positive charge and protons have a negative charge.

• The reason it is positive is because neutrons have a negative charge and protons have a positive charge

• The reason it is positive is because neutrons have no charge and protons have a positive charge.

• The reason it is positive is because neutrons have no charge and protons have a negative charge

Which element has an electron configuration of 2.8.5?

• Oxygen
• Nitrogen
• Phosphorus
• Carbon

The electron shell n = 1 is a higher energy electron shell than n = 4.

• True

• False

How many electron shells does Silicon have?

• 14

• 2

• 3

• 4

What is a positive ion called?

• anion

• cation

• isotope

• covalent

If the atom has more electrons, it is left with a negative charge.

• true

• false

Atoms have a total charge of zero if the number of protons and the number of electrons are equal.

• true

• false