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4 years ago

What do atoms form when they share electron pairs molecules isotopes elements?

1 answer:

6 0

The answer to this item is the first choice, MOLECULES. The molecules are the smallest particles of both the compounds and even the biatomic elements. They are made up of atoms that are being held together through chemical bonds of different types depending on the type of atoms that shared the electrons.

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3. Relate Cause and Effect How can an atom be

VLD [36.1K]

Answer:

Because the neutrons equal the number of protons

Explanation:

So if u have 16 protons u have 16 neutrons

7 0

4 years ago

a couple of pennies have a mas of 5.2 grams. Asuming that the pennies are 100% percent copper,how many moles of copper are the p

dangina [55]

Answer:

5.2g copper (Cu) => 0.082 moles copper (2 sig.figs.)

Explanation:

mole conversions:

grams to moles => divide by formula wt.

moles to grams => multiply by formula wt.

gas volumes to moles => divide volume by 22.4Liters/mole (STP conditions only)

This problem:

mass to moles => divide by formula wt.

mass = 5.2g = 5.2g/63.5g/mole = 0.082 moles copper (2 sig.figs.)

5 0

3 years ago

A cliff near the water has been worn away. How did erosion change the shape of the land?

kupik [55]

Answer:

Explanation:

8 0

3 years ago

he final electron in inner transition metals enters the a. p sublevel. c. d sublevel. b. s sublevel. d. f sublevel.

kobusy [5.1K]

Answer:

Option d. f sublevel

Explanation:

Inner transition elements includes:

Lanthanides

Actinides

Lanthanides includes elements having atomic number ranges from 52-71.

Actinides includes elements having atomic number ranges from 89-103.

Actinides and lanthanides have been placed separately in two rows below all the other elements.

General electronic configuration of lanthanides: $4f^{1-14}5d^{0-1}6s^2$

General electronic configuration of actinides: $5f^{1-14}6d^{0-1}7s^2$

As last electrons enters in f sub shell or sublevel, these elements are also called f-block elements.

4 0

4 years ago

No links.

Gennadij [26K]

Explanation:

first find the value of Ph

from Ph= -log[H+]

ph=-log[1.7x10^-8]=7.769

find Poh from 14=ph+poh

14=7.769+poh

Poh=6.231 part a

for part b the same as part a from the above procedure

5 0

3 years ago