Which statement explains why metals are good conductors of electricity?

Which statement explains why metals are good conductors of electricity?

Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.

What is special about the elements in group 18?

The noble gases (Group 18) are located in the far right of the periodic table and were previously referred to as the “inert gases” due to the fact that their filled valence shells (octets) make them extremely nonreactive. The noble gases were characterized relatively late compared to other element groups.

How do you learn the elements in group 18?

The group includes Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and the radioactive Radon (Rn). Mnemonic for Group 18: He Never Arrived; Kara Xero Run pe out.

How do you learn the first 18 elements?

Arthur Kisses Carrie. Here He Lies Beneath Bed Clothes, Nothing On, Feeling Nervous, Naughty Margret Always Sighs, ” Please Stop Clowning Around ” (18 elements)…

1. hydrogen H.
2. helium He.
3. lithium Li.
4. beryllium Be.
5. boron B.
6. carbon C.
7. nitrogen N.
8. oxygen O.

How do I learn elements?

Memorize Using Mnemonic Devices The symbols for the elements are associated with words that form a phrase. If you can remember the phrase and know the symbols for the elements then you can memorize the order of the elements.

How do you remember the first 10 elements?

Henry Hester Likes Beer But CanNot Obtain Food Now

1. Henry — Hydrogen ( The common ‘y’ helps in avoiding mixing it for Helium)
2. Hester — Helium.
3. Likes — Lithium.
4. Beer — Beryllium (Be) ( Both start with ‘Be’, helps to avoid mixing it with Boron)
5. But — Boron.
6. Can — Carbon.
7. Not — Nitrogen.
8. Obtain — Oxygen.

What is the first 20 element?

First 20 Elements

Atomic Number	Element	Symbol
17	Chlorine	Cl
18	Argon	Ar
19	Potassium	K
20	Calcium	Ca

What is the atomic mass of first 20 elements?

Atomic Mass of First 30 Elements

ATOMIC NUMBER	ELEMENT	ATOMIC MASS
18	Argon	39.948
19	Potassium	39.098
20	Calcium	40.078
21	Scandium	44.956

How is atomic number calculated?

The symbol for an atom can be written to show its mass number at the top, and its atomic number at the bottom. To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number: number of protons = atomic number. number of electrons = atomic number.

How do I remember?

7 Tricks To Help You Remember Anything

1. Convert words to pictures.
2. Use memory spots.
3. Stacking.
4. Use rhymes.
5. Use mnemonic devices.
6. Work specifically on names.
7. Use pictorial storage to remember lists of items.