Alchemy Quiz 12

What element has two electron shells and 3 valence electrons?

• Li

• Be

• B

• Mg

If an element is located in Group 4A of the periodic table, what can you conclude about atoms of this element?

• It has properties similar to beryllium.

• It has four valence electrons.

• It has four core electrons.

• It has four electron shells.

To create an ion from a neutral atom, which of these values is changed?

• number of nuclei

• number of protons

• number of neutrons

• number of electrons

When a magnesium atom forms an ion with a noble gas configuration, what will its charge be?

• 3+

• 2+

• 1+

• 1-

• 2-

Which of these are the correct labels for the two shell diagrams shown?

• a fluorine atom and a fluoride ion with a charge of 1-

• a fluorine atom and a fluoride ion with a charge of 1+

• a fluorine atom and a neon atom

• a neon ion with a charge of 1+ and a neon atom

Tags

NGSS.MS-PS1-1

An ion is created when what part of the atom is gained or lost?

• protons

• neutrons

• electrons

• alpha particles

How many valence electrons do most Noble Gases have?

• 2

• 4

• 8

• 18

When a lithium atom forms an ion, its charge will become:

• 1+

• 1-

• 2+

• 2-

In most ionic compounds, how many electrons does each ion have in its valence shell?

• 2 or 8

• 8

• 8, 16, or 24

• a number equal to its atomic number

• a number equal to its atomic mass

The rule of zero charge states that:

• atoms gain neutrons when forming ionic compounds.

• an ionic compound contains two or more elements that have no charge.

• an atom that gains an electron must also gain a proton to remain electrically neutral.

• the charges on metal cations and nonmetal anions in an ionic compound add up to zero.