What does the last element in any period always have?
A fully filled valence shell.
The final elements of each period are associated with group 18, which is the group of noble or inert gases. All of these gases are usually non-reactive because their valence shells are completely filled.
By signing up, you agree to our Terms of Service and Privacy Policy
Period 1 elements always have their outermost electron shell fully filled with electrons, forming a stable electron configuration; for elements in all other periods of the periodic table, this is equivalent to having a full outermost electron shell, which contains two electrons in the case of helium.
By signing up, you agree to our Terms of Service and Privacy Policy
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- In the followings ,decreasing order of 1st ionisation energy will be ,i)Xe,ii)Al,iii)Be,iv)As. ?
- Why is the second ionization energy greater than the first ionization energy in atoms?
- What are some common mistakes students make with valence electrons?
- What is the trend in Atomic Radii? Which elements have a bigger Radius?
- How would the size of the xenon atom compare to that of the neon atom?

- 98% accuracy study help
- Covers math, physics, chemistry, biology, and more
- Step-by-step, in-depth guides
- Readily available 24/7