Polar bond is formed by 2 non-metal atoms which have a significant difference in electronegativity.
Answer: B) has a small negative value.
Explanation:
Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.
is positive when randomness increases and is negative when randomness decreases.
As there are 5 moles of gaseous reactants and 4 moles of gaseous products, the gaseous molecules are decreasing on moving from reactants to products, thus randomness decreases and is negative.
Thus has a small negative value.
From,
RAM=element×its relative abudance/total abudance
=((107×13)+(12×109))/25
The answer is=107.96
- In chemical weathering minerals are changed into new minerals and mineral byproducts.
- Some minerals like halite and calcite may dissolve completely.
- Chemical weathering may change the size of pieces of rock materials, but definitely changes the composition.
- So one type of mineral changes into a different mineral.
- Chemical weathering works through chemical reactions that cause changes in the minerals.
<h3>Hope it helps you !!</h3>
Answer: Electronic transition moments are defined as the probability for a given excitation energy transition to take place. It should be evident that the transition moment depends upon the spin-orbit coupling of the electrons in both the ground and excited states.