Acid more H3O+ than OH-
Base less H3O+ than OH-
Answer:
Option A, The Rutherford experiment proved the Thomson "plum-pudding" model of the atom to be essentially correct.
Explanation:
Thomson's plum pudding model:
Plum pudding model was proposed by J.J Thomson. In Thomson's model, atoms are proposed as sea of positively charge in which electrons are distributed through out.
Result of Rutherford experiment:
As per Rutherford's experiment:
Most of the space inside the atom is empty.
Positively charge of the atom are concentrated in the centre of the atom known as nucleus.
Electrons are present outside the nucleus and revolve around it.
As it is clear that, result of Rutherford experiment did not supported the Thomson model.
1kg = 1000grams
<span>mass of uranium = 235
number of atoms in 1 mole = avogadro's number = 6.02 x 10</span>²³
<span>Each nucleus will release = 200 Mev of energy.
So, E = 200 x (1000/235) x 6.02 x 10</span>²³
= 5.12 x 10²⁶<span> Mev
Now convert this to joules
1Mev = 1.60218 x 10</span>⁻¹³
5.12 x 10²⁶ Mev = 5.12 x 10²⁶ Mev x 1.60218 x 10⁻¹³
= 8.21 x 10¹³ Joules
Answer:
A. The farther an electron is from the nucleus, the greater its energy.
Explanation:
Answer:
carbon and silicon
Explanation:
Various groups of elements in the periodic table have different outermost shell electron configurations. Actually, elements are classified into groups on the basis of the number of electrons on the outermost shell of those elements. All elements with the same number of electrons on their outermost shell belong to the same group in the periodic table.
For elements in group 14, they all have four electrons on their outermost shell. Their general outer electron configuration is ns2 np2 as shown in the question. Two prominent members of this group are carbon and silicon. This ns2 np2 is the ground state outer electron configuration of all group 14 elements in the periodic table.
