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Andrews [41]
3 years ago
6

What do the numbers listed for an element on the periodic table represent

Chemistry
2 answers:
garik1379 [7]3 years ago
8 0
The number with a lower value is the number of protons and the number with a higher value is the mass
velikii [3]3 years ago
5 0
There are usually two values you'll come across on the periodic table.

1. the atomic number.
this represents the number of protons an element has. For example, hydrogen (H) has an atomic number of 1, which means that hydrogen has only one proton.

2. the mass number.
this usually represents the number of protons and neutrons an element has. For example, carbon (C) has a mass number of roughly 12, which means that the sum of its protons and neutrons add up to about 12. We know carbon has an atomic number of 6 (6 protons) so the number of neutrons must be 6 aswell.

(the mass numbers can differ depending on which periodic table you are given)

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Oxygen and nitrogen are both gases at room temperature. Explain why oxygen has a greater force of attraction between its particl
RideAnS [48]

Answer:

Explanation:

Oxygen molecules and Nitrogen molecules forms in a very similar way. The attraction between particles of oxygen is great due to its very high electronegativity value. Oxygen has a higher electronegative value compared to nitrogen.

Electronegativity of an atom is the relative tendency with which atoms of an element attracts valence electrons in a chemical bond. Valence electrons are used in forming chemical bonds. They can be transferred from one atom to the other or they can be shared.

Oxygen is the second most electronegative atom on the periodic table. To form a bond, it shares the valence electrons in order for its octet to be complete. Pull for the valence electrons between the contributing atoms is very strong due to their large electronegative values. This pull is stronger compared to that between nitrogen atoms.

8 0
3 years ago
Which of the following is NOT an
skelet666 [1.2K]
The answer is C. Light because light is a form of energy
8 0
3 years ago
Read 2 more answers
What type of wave do the contractions of the snake muscles make as the snake moves forward
S_A_V [24]
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(taken from a user on Yahoo from Correct Answers)
3 0
3 years ago
Aluminum boils at 2467°C. Aluminum’s boiling point in Kelvin is 2194.<br> T or F
dusya [7]
That is false because aluminum melts at 2,470C
7 0
3 years ago
what is the pressure, in atmospheres, of 2.97 mol h2 gas if it has a volume of 73 liters when the temperature is 298 k? 0.50 atm
Triss [41]
P x V = n x R x T

P x 73 = 2.97 x 0.082 x 298

P x 73 = 72.57492

P = 72.57492 / 73

P = 1.0 atm

hope this helps!




6 0
3 years ago
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