A

$Cu^{+}$

1. O The atomic number is UNIQUE to each element! Atomic Mass: The mass of an atom expressed in (u, amu). This is a weighted average of all known isotopes of the element. O Isotopes are atoms with the same atomic number (thus, same element), but different numbers of neutrons. Mass Number: Represents the total number of and in the nucleus. O Does not measure electron mass.
2. Nickel is a chemical element with the symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.
3. The atomic number of Ni and Cu are 28 and 29 respectively. The electronic configuration 1s2 2s2 2p6 3s2 3p6 3d10 represents: chemistry. The atomic number of Ni and Cu are 28 and 29 respectively.
4. The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present). The number of protons determines how many electrons surround the nucleus, and it is the arrangement of these electrons that.

B

$Cu^{2+}$

The number of unpaired electrons in Ni (atomic number = 28) are.

C

$Ni^{2+}$

D

$Ni$

Solution:

Electronic configuration of$_{28}Ni = Is^2, 2s^2 2p^6, 3s^23p^63d^8, 4s^2$
$ Ni^{2+} = Is^2, 2s^22p^6, 3s^2 3p^6 3d^8, 4s^0$
$_{29}Cu = 1s^2 ,2s^2p^6 ,3s^23p^63d^{10} ,4s^1$
$Cu^+ = Is^2, 2s^22p^6, 3s^23p^63d^{10}, 4s^0$
So, the given configuration is of $ Cu^+$

1. The formation of $ O^{+}_2 [P_t F_6 ]^-$ is the basis for the formation of Xenon fluorides. This is because

2. The highest magnetic moment is shown by the transition metal ion with the configuration

3. In which of the following complex ion, the central metal ion is in a state of $sp^3d^2$ hybridisation ?

4. Which of the following can participate in linkage isomerism ?

5. Which of the following has the highest bond order ?

6. Which of the following is diamagnetic ?

7. In the following, the element with the highest ionisation energy is

8. In the conversion of $Br_2$ to $BrO^-_3 $, the oxidation number of Br changes from

9. Among the alkali metals cesium is the most reactive because

10. Which of the following represents the Lewis structure of $N_2$ molecule ?

1. The following nuclear transmission
$ce{^{23}_{11}Na + ^{1}_{1} H to ^{23}_{12} Mg + ^{1}_{0} n}$
belongs to

2. For emission line of atomic hydrogen from $n_i = 8$ to $n_f $ = the plot of wave number $(bar{v})$ against $( frac{1}{n^2})$ will be (The Ry dbergconstant, $R_H$ is in wave number unit).

3. Half-life of radium is 1580 years. Its average life will be

4. Which of the following arrangement is possible?
$quad$$quad$n$quad$ $quad$l$quad$$quad$m$quad$$quad$s

5. Quantum numbers of an atom can be defined on the basis of

6. Spectrum of Li²⁺ is similar to that of

7. Azimuthal quantum number defines

8. The quantum number m of a free gaseous atom is associated with

9. The isoelectronic pair is

10. For principle quantum number n = 4, the total number of orbitals having l = 3 is

1. In Wolff‐Kishner reduction, the carbonyl group of aldehydes and ketones is converted into

2. Identify compound X in the following sequence of reactions:

3. Identify a molecule which does not exist.

4. Identify the incorrect match.

Name		IUPAC Official Name
A	Unnilunium	i	Mendelevium
B	Unniltrium	ii	Lawrencium
C	Unnilhexium	iii	Seaborgium
D	Unununnium	iv	Darmstadtium

5. Reaction between acetone and methyl magnesium chloride followed by hydrolysis will give :

6. Identify the correct statements from the following:
(a) $CO_2(g)$ is used as refrigerant for ice-cream and frozen food.
(b) The structure of $C_{60}$ contains twelve six carbon rings and twenty five carbon rings.
(c) $ZSM-5$, a type of zeolite, is used to convert alcohols into gasoline.
(d) $CO$ is colorless and odourless gas.

7. Which of the following set of molecules will have zero dipole moment ?

8. On electrolysis of dil.sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be:

9. An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radiusis:

10. Find out the solubility of $Ni(OH)_2$ in 0.1 M NaOH. Given that the ionic product of $Ni(OH)_2$ is $2 times 10^{-15}$

Atomic Number of Nickel is 28.

Chemical symbol for Nickel is Ni. Number of protons in Nickel is 28. Atomic weight of Nickel is 58.6934 u or g/mol. Melting point of Nickel is 1453 °C and its the boiling point is 2732 °C.

» Boiling Point» Melting Point» Abundant» State at STP» Discovery Year

Atomic Number Of Nine

About Nickel

Nickel is a light grey color metal, which is quite strong and very resistive to corrosion. The name of the element is believed to take roots from the German expression meaning Devil’s copper. Despite the fact that nickel can be found in cells of all living organisms, this element is very carcinogenic even in small doses. It is impossible to find pure nickel on our planet, only in minerals, as well as on meteorites coming to our planet (one of them has landed in Canada and now provides about 15 per cent of the world’s nickel supply). Nickel used to be a key element for producing coins, and it is also used to produce batteries. Due its high resistance to corrosion, nickel is used to cover various metallic parts in order to prevent their corrosion. Numerous alloys of nickel have wide industrial uses.

Properties of Nickel Element

Atomic Number (Z)	28
Atomic Symbol	Ni
Group	10
Period	4
Atomic Weight	58.6934 u
Density	8.912 g/cm3
Melting Point (K)	1728 K
Melting Point (℃)	1453 °C
Boiling Point (K)	3186 K
Boiling Point (℃)	2732 °C
Heat Capacity	0.444 J/g · K
Abundance	84 mg/kg
State at STP	Solid
Occurrence	Primordial
Description	Transition metal
Electronegativity (Pauling) χ	1.88
Ionization Energy (eV)	7.881
Atomic Radius	135pm
Covalent Radius	126pm
Valence Electrons	2
Year of Discovery	1751
Discoverer	Cronstedt

What is the Boiling Point of Nickel?

Nickel boiling point is 2732 °C. Visual basic in excel for mac. Boiling point of Nickel in Kelvin is 3186 K.

What is the Melting Point of Nickel?

Nickel melting point is 1453 °C. Melting point of Nickel in Kelvin is 1728 K.

How Abundant is Nickel?

Abundant value of Nickel is 84 mg/kg.

What is the State of Nickel at Standard Temperature and Pressure (STP)?

Atomic Number Of Nitrate

State of Nickel is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.

Beryllium

When was Nickel Discovered?

Nickel was discovered in 1751.

Atomic Number Of Nicotine