All categories

3 years ago

In which atom is the number of protons equal to the number of neutrons?

Chemistry

2 answers:

pickupchik [31]3 years ago

7 0

Answer:

neutral

Explanation:

scZoUnD [109]3 years ago

5 0

The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).

You might be interested in

Why does nuclear charge increase as you go left to right across a period

MariettaO [177]

The atomic number increases moving left to right across a period and subsequently so does the effective nuclear charge. Therefore, moving left to right across a period the nucleus has a greater pull on the outer electrons and the atomic radii decreases.

7 0

3 years ago

What is the pressure of a fixed volume of hydrogen gas at 38.8°C if it has a pressure of 1.36 atm at 15.0°C?

Rainbow [258]

Hello There! ^_^

Your question: What is the pressure of a fixed volume of hydrogen gas at 38.8°C if it has a pressure of 1.36 atm at 15.0°C..?

Your answer: P1/ T1= P2/ T2

Change C to Kelvin

273+ C= K

38.3+ 273= 311K

15.0+ 273= 288K

2.38/ 288= P2/ 311.3

740.894= 288 (P2)

P2= 2.57 atm.

Thus, you got you answer!

  Hope this helps!

4 0

3 years ago

Iron-59 which is used to diagnose anaemia has a half life of 45days, what fraction of it is left in 90 days

rodikova [14]

Answer:

0.25 of the original

Explanation:

(0.5)^(90/45)

7 0

3 years ago

Two objects of equal mass have a force of gravity of 6 N between them. Imagine the mass of one is cut in half and the other stay

Alenkasestr [34]

Answer:

F' = 3 N

Explanation:

Given that,

Two objects of equal mass have a force of gravity of 6 N between them.

If the mass of one is cut in half and the other stays the same such that,

m₁' = m₁ and m₂' = (m₂/2)

We need to find the new force. The gravitational force between two objects is given by :

$F=G\dfrac{m_1m_2}{r^2}$

We have, F = 6 N

New force,

$F'=G\dfrac{m_1'm_2'}{r^2}\\\\F'=\dfrac{Gm_1\times \dfrac{m_1}{2}}{r^2}\\\\=\dfrac{1}{2}\times \dfrac{Gm_1m_2}{r^2}\\\\F'=\dfrac{F}{2}\\\\F'=\dfrac{6}{2}\\\\F'=3\ N$

So, the new force becomes 3 N.

3 0

3 years ago

Richard sketched models of two different neutral isotopes of oxygen. If the

Tasya [4]

Answer:c

Explanation:just did it

5 0

3 years ago

Read 2 more answers

In which atom is the number of protons equal to the number of neutrons?​

In which atom is the number of protons equal to the number of neutrons?