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- 1's Complement, has two different codes for the number 0 (+0 & -0), negative numbers are the simple binary complement of positive numbers, is symmetrical (same number of negative and positive numbers can be represented), adder/subtractor must implement wraparound carry from MSB to LSB to get correct answer
- 2's Complement, has only one code for the number 0 (+0), negative numbers are 1 greater than the simple binary complement of positive numbers, is asymmetrical (one extra negative number than positive numbers), adder/subtractor is identical to a simple unsigned binary adder/subtractor without any special carry circuits needed
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What is the binary complement 8 bit representation for negative 19?
8-bit 2s complement representation of -19 is 11101101 For 1s complement invert all the bits. For 2s complement add 1 to the 1s complement: With 8-bits: 19 � 0001 0011 1s � 1110 1100 2s � 1110 1100 + 1 = 1110 1101
The major difference between a 1s orbital and a 2s orbital is that?
the 1s orbital is closer to the nucleus and has a lower energy level compared to the 2s orbital. Additionally, the 2s orbital has a slightly higher energy, larger size, and can hold more electrons than the 1s orbital.
1s plus 1s plus 1?
1s + 1s + 1 = 2s + 1
How a 1s orbital different from a 2s orbital in terms of size?
The 2s orbital is larger than the 1s orbital and is higher in energy.
The 2's compliment of the number 1000 is?
To get the 2s complement, find the 1s complement (by inverting the bits) and add 1. Assuming that number is [4-bit] binary it would be 1000. If it is preceded by 0s, as in, for example, 0000 1000, then it would be 1111 1000.
Rank these subshells in order of increasing energy?
1s 2s 3s 3p 4s 3d 4p
How can you make a 3d model of a lithium atom?
lithium atom is just a ball it has 1s and 2s orbitals both of which are spheres the 1s is occupied by two electrons and the 2s one electron
Electron configuration for lithium?
The electron configuration for lithium is 1s^2 2s^1. This means that lithium has 3 electrons, with two in the 1s orbital and one in the 2s orbital.
What is the electron configuration for Neon?
The electron configuration for Neon is 1s2 2s2 2p6. This means that Neon has 10 electrons, with 2 in the 1s orbital, 2 in the 2s orbital, and 6 in the 2p orbital.
How many orbitals are filled in a silicon atom?
In a silicon atom, there are four filled orbitals. Specifically, there are two filled in the 1s orbital and two filled in the 2s orbital.
How does 2s orbital differ from a 1s orbital?
1s and 2s orbitals differ in that 2s orbitals lie farther away from the nucleus in the next principle energy level. Other than that, they occupy the same shape of orbital, spherical, as indicated by the s.
Why is the 2s subshell of heigher energy than the 1s subshell?
The 2s subshell has a higher energy level than the 1s subshell due to the presence of more nodes in the 2s orbital, which increases its energy. Additionally, the 2s orbital has a larger principal quantum number (n) than the 1s orbital, leading to greater distance from the nucleus and therefore higher energy.
